300+ TOP Plant Interview Questions & Answers

1. How Do Plant Cells Differ From Animal Cells?

In having cell wall, plastids and large vacuoles.

2. Which Is The Structural And Physiological Unit Of A Plant?

Cells.

3. Who Discovered The Plant Cell?

Schneider and Robert Hooke in 1665.

4. What Is Source Of Turgid In Plant Cell?

Water.

5. The Material Of Which The Wall Of A Plant Cell Is Made?

Cellulose.

6. Cricket Bats Are Made Out Of The Wood Of Which Tree?

Willow.

7. What Gives Yellow Colour To Old Leaves?

Xanthophylls.

8. Which Acid Is Contained In Vegetable Oils?

Stearic acid.

9. What Is Cotton Fibre?

Pure cellulose.

10. What Helps In Flowering?

The florigen.

11. Which Scientist Proved That Plants Also Have Got Life As That Of Animals?

Jagadish Chandra Bose.

12. What Are The Subsidiary Cells?

Immediate cells surrounding the guard cells are called subsidiary cells.

13. What Is Cell Biology?

Study of structure function, reproduction and life history of cells of an organism.

14. What Is Meant By Nomenclature?

It is the science of naming individuals on the basis of their body characters, habits and distribution.

15. What Are Protozoa?

Protozoa are cellular or non – cellular organisms. Their bodies are made of single cell which perform all the essential activities.

16. Who Is The Father Of Taxonomy?

Carolus Linnaeus. He originated the modern classification system and first used binomial system of nomenclature.

17. What Are Saprophytes?

Saprophytes are those plants which feed on dead organic material.

18. What Is Dendrology?

The study of trees is called dendrology.

19. Which Organism Is Having Characters Of Both Plants And Animals?

Euglena.

20. Plant Tissues Are Classified Into Two Groups. What Are They?

Meristematic tissue and permanent tissue.

21. Name The Two Types Of Complex Permanent Tissues In Plants?

Xylem and Phloem.

22. What Are Angiosperms?

The flowering plants are generally called angiosperms. Their reproductive organs are in flowers having seeds.

23. What Are The Two Classes Of Flowering Plants?

They are monocotyledons or monocots and dicotyledons or dicots.

24. What Is The Difference Between Monocotyledons And Dicotyledons?

They differ in the structure of their seeds, stems and leaves. But the basic distinction between them is that dicots have two cotyledons or seed leaves and monocots have only one. Dicotyledons are also known as magnolias.

25. Which Is The Largest Flower?

The largest flower is the mottled orange – brown and white parasitic stinking corps lily (raffiesia arnoldii) which grows in the forests of southest Asia. It was named after the founder of Singapore, sir samford raffles. The width of the flower is 1 – 3 ft, across.

26. Which Is The Smallest Flowering Point?

The floating wolffia angasta from the duckweed family are the smallest flowering plants. The width of the flower is 0.5 mm.

27. What Is Pollination?

The process of transferring the pollen, the male reproductive units, from the parts, that produce them to the planets female structure.

28. What Are Cleistogamous Flowers?

Some flowers remain closed and never open. These flowers are called cleistogamous.

29. What Is Fertilization?

Fertilization means fusion of the nuclei of male and female gametes.

30. What Is Double Fertilization?

It means one male gamete with the egg and the other with the antipodal cell.

31. From Where Is Clove Oil Obtained?

Clove oil is obtained from the flower buds of syzyhium aromaticum.

32. What Is The Sepal?

The sepal is the protective leaf – like part of a flower which is usually green in colour and lies outside the petals.

33. What Is Stamen?

Stamen is the male reproductive part of a flower composed of a filament or stalk, and a pair of pollen sacs together called anther.

34. Give One Example Of Epigenous Type Of Flower?

Sunflower.

35. Why Are Night Blooming Flowers White In Colour?

To become discernible to pollinators.

36. What Is Called Bicarpillary Pistil?

A pistil which is composed of two carpels.

37. Which Is The Process Of Removing Another From A Bisexual Flower?

Emasculation.

38. In Which Country Did The Flower Dahlia Originate?

In Mexico.

39. Give An Example Of A Plant Which Produces Many Seeds?

Pea.

40. What Is A Devil’s Tree?

Devi’s tree is a large evergreen tree, nearly 25 mts height. Devils tree is usable in severe as well as everyday illness, irritable bowel, diarrhea, and skin eruptions.

41. Give The Name Of The Trees Which Flower Only Once In A Complete Life Cycle?

Monocarp.

42. Where Does The Fertilization Occur?

In Embryo sac.

43. What Is Stigma?

Stigma is the receptive surface area of the carpel (female reproductive organ of a flower) which is sticky or feathery.

44. Which Is The Main Type Of Fruits?

The main types of fruits are drupe, pome, leguime, berry, nut and aggregate.

45. What Are The Difference Between Drupe, Berry And Aggregate?

Drupe is a fruit with a single seed. Berry with seeds and aggregate is a fruit with many tiny drupes.

46. Which Is The Most Nutritive Fruit?

Avocado (persea American) has the highest calorific value (740 calories) and cucumber (73 calories) has the lowest.

47. Which Is The Ester That Gives Pineapple Its Pleasant Smell?

Ethyne Butyrate.

48. Which Is The Plant In Which The Seeds Grow Without Ovary?

Psychus.

49. What Is Anthology?

The study of flowers.

50. In Gymnosperms, How Does The Pollination Take Place?

Through wind.

51. What Is Spermology?

The study of seeds.

52. What Is Called The Formation Of Ruit Without Fertilization?

Parthenocarpy.

53. Hat Do You Call The Flowers Of Fruit Trees?

They are called blossom.

54. What Is The Name Given To A Young Tree?

A young tree is a sapling.

55. Which Is Part Of The Sugar Maple Tree Produces Maple Syrup?

The sap of the sugar maple.

56. Do All Plants Flower?

No, ferns, mosses, liverworts and lichens do not.

57. What Is The Male Reproductive Part Of A Flower Called?

The male part of a flower is the stamen.

58. What Is The Process By Which A Plant Uses The Energy Of Sunlight To Make Food?

The process is called photosynthesis.

59. Do Pine Comes Open In Dry Weather Or In Rainy Weather?

They open in dry weather.

60. Which Is The Biggest Tree In The World?

The US giant Sequoia can be 83 m (275 ft) tall.

61. Why Do People Get Hay Fever?

Because they are allergic to pollen in the air.

62. What Is The Function Of The Xylem?

To transport water and minerals.

63. What Is Nectar?

A sugary liquid produced by a flower.

64. What Happens To A Flower Once It Has Been Pollinated?

The petals fall off and the seed ripens.

65. Do Flowers Smell Strongest By Day Or By Night?

By night, to attract night – flying insects.

66. What Is The Name Of The Disease Caused By The Lack Of Iron Plants?

Chlorosis.

67. Which Hormone Promotes Leaf Fall?

Abscisic acid.

68. What Is An Organism Deriving Its Nourishment From Another Living Organism?

Parasite.

69. Give An Example Of A Root Parasite?

Striga.

70. Which Plant Can Absorb Nitrogen In The Form Of Ammonia?

Paddy.

71. Which Is The Plant That Stores Food In Its Leaves?

Cabbage.

72. Which Are The Plants That Shed Branches?

Cherry and brich.

73. From Which Tree Do We Obtain Quinie?

From the bark of the cinchona tree.

74. Which Is The Most Beautiful Of All Flowering Trees In The World?

Flame Amherstia.

75. What Is The Method By Which Plants Absorb Mineral Salts?

Theu absorb mineral salts through osmosis.

76. In Which Plants The Annual Rings Are Absent?

Gymnosperms.

77. Which Are The Plants That She Leaves With Branches?

Redwood and cypress.

78. What Are Insectivorous Plants?

Insectivorous plants are those plants that trap insects and other small creatures for food. They include sundews, pitcher plants and fly traps.

79. What Is Tropism?

Tropism is the movement of a plant response to a particular external stimulus such as gravity or light which causes the root or stem to bend towards or away from it. If the pull is by gravity, it is geotropism. If it is by light, it is phototropism.

80. Which Plants Are Very Much Used In Modern Medicine?

The fox – glove for heart diseases, atropabelladonna (from which atropine yields) papaver somnifenim (opium, morphine, heroine) and a fungus claviceps purpurea (lysergic acid).

81. What Are Xerophytes?

Plants growing in desert conditions or in alkaline acid, salt or dry soil.

82. Which Is The Tallest Tree?

Eucalyptus.

83. In Which Form Most Plants Absorb Nitrogen?

Nitrates.

84. What Is Beech?

Large, widespread family of trees including the beeches oak and chestnuts. Wood is used in furniture.

85. Which Is Native Place Of Cashew Nut Tree?

South America.

86. Which Evergreen Tree Is Found In Himalayas?

Cedar trees.

87. Which Trees Wood Is Valuable In Boat Building?

Eln, found in Europe, N.Africa and India.

88. How The Age Of A Tree Is Estimated?

By counting the tree rings on a cut stump.

89. Which Are The Oldest Known Plants?

The oldest known are traces of algae that lived more than 3 billion years ago.

90. What Are The Plants That Grow On Marshy Near The Sea Coast?

Rhizophora and Avicenna.

91. Name The Process By Which Plants Prepare Their Food?

Photosynthesis.

92. Which Is The Basic Life Process Which Causes The Flow Of Energy?

Photosynthesis.

93. What Is The Source Of Oxygen In Photosynthesis In Plants?

Water.

94. What Is The Final Product Of The Photosynthesis In Plants?

Carbohydrates.

95. What Is A Tissue In A Plant?

A group of cells performing a common function in an organism is known as a tiisue.

96. What Is Cell Theory?

1. All plants and animals are made up of cells.
2. All cells arise from pre- existing cells.

97. Who Put Forward This Theory?

In 1830 two german scientists named Matthias and Theodor Schumann.

98. What Is Structure Of A Cell?

Every cell is surrounded by a membrane. This membrane is called cell membrane or plasma membrane. It allows only certain materials to pass through. Hence it is said to be selectively permeable.

99. What Is Cytoplasm?

The protoplasm in the cell, outside the nucleus is called cytoplasm.

100. What Gives Rigidity And Maintains Shape Of A Cell?

Endoplasmic reticulum.

101. What Is Ribosomes?

Ribosomes are spherical bodies found attached to endoplasmic reticulum or free in the cytoplasm. They are rich in ribonucleic acid.

102. What Is Mitochondria?

These are rod shaped or filamentous structures seen in the cytoplasm. They are found in all living organisms except bacteria, and mature red blood cells of mammals.

103. What Is Called A “power House” Of A Cell?

Mitochondria are called so because they generate, store and release energy for the use of cell.

104. What Is Nucleus?

Nucleus is a spherical body which controls all the process in the cell.

105. Which Are The Two Types Of Nucleic Acids?

Deoxyribonucleic acid (DNA) and Ribonucleic acid (RNA).

106. What Is A Brich?

It is a group of graceful deciduous trees belonging to the brich family which grow throughout the temperature and arctic regions.

107. What Is A Bortree?

It is name given by Buddhists to one papal or sacred fig tree under which Buddha was enlighted.

108. What Is A Breeding Plant?

The controlled breeding of plants to produce varieties with higher yields, resistance to climate, greater quality and beauty. The aim is to bring out best features.

109. Where Is The Protein Synthesis Takes Place In A Plant?

Cytoplasm.

110. What Is Chrysanthemum?

It is more than 200 species of flowering plants. The flowers exhibit a wide range of colours white, pink, yellow, bronze and red.

111. What Is Deciduous?

It is term used to describe plants which shed their leaves to eliminate all loss of water through transpiration, or prevent damage from frost or drought, during their dormant season.

112. Which Tree Is Used In Planting Parks?

Fir trees.

113. Which Is The Term Used For Describing The Manifold Increase In India’s Farm Production And Productivity?

Green revolution.

114. Who Is Considered As The Father Of Green Revolution?

Norman Borlang.

115. Name The Instrument Used In Recording The Growth Of Plants?

Cresco graph.

116. Who Invented The Crescograph?

Jagadish Chandra Bose.

117. What Is The Scientific Name Of The Tea Plant?

Camella sinensis.

118. What Is Dendrochronology?

It is the method of dating past events by analysis of tree rings. It was first developed in USA in 1929.

119. What Is A Nocturnal Plant?

Plant which opens its flowers in the evening rather than during the day. It is often a desert or tropical plant, which so avoids the scorching heat of the sun.

120. Which Fungus Is Used In Fermentation Of Alcohol?

Yeast.

121. Which Is The Harmful Substance Present In The Tobacco?

Nicotine.

122. What Do You Mean By Herbs?

The plants which have soft, flexible and usually green stem.

123. Which Plant Is A Carnivore?

Butterwort.

124. Which Vegetable Is Grown Throughout The World?

Carrot.

125. Why Is Teak Wood Used For Building Ships?

It is hard, very durable and resistant to termites, weevil and weathering.

126. What Is Agrostology?

The study of grasses is called agrostology.

127. Which Heart Plants Are Known By The Popular Name Of Succulents?

The cacti.

128. What Is The Function Of Tendril?

Climbing.

129. Which Food Crop Has The Maximum Content Of Proteins?

Soya bean.

130. Name Two Vegetable Oils Which Are Used As Medicine?

Castor oil and mustard oil.

131. Which Is The Heaviest Plant?

Giant Sequoia.

132. What Is Orchid?

It is a largest family of flowering plants, comprise nearly 2,000 species. It is found in large abundance in tropics..

133. What Is Jack In The Pulpit?

It is an American plant with a flower strike partly arched over by a hood like covering.

134. What Is Germination?

The escape of the embryo from seeds is known as germination.

135. What Is Called As The Vegetative Bud?

The growing tip of the stem consists of several tender organs folded together. This part is called as the vegetative bud.

136. What Is Called A Primary Root Or Taproot?

The contribution of the main axis into the soil is called as primary root or taproot.

137. Which Plants Are Known As Hydrophytes?

The aquatic plants.

138. What Are Halophytes?

These are the plants growing in marsh regions and where water in the soil is salty.

139. Give Name Of Two Insectivorous Plants?

Utricularia and drosea.

140. What Is The Medicinal Use Of Quinine?

Quinine is used in treating malaria. It is made from the bark of the cinchona tree.

141. Modern Science Uses Seaweeds For Which Purpose?

For making tooth paste, soft drinks, glue etc.

142. Which Is The Tallest Non – Flowering Plant?

Tree – fern.

143. Which Conifer Is Grown All Over The World For Its Timber And For Making Paper?

The Sitka spruce.

144. Among Indian Trees Which Is The Most Beneficial Medically?

Neem.

145. With Which Crop Did The Green Revolution Start?

High yielding varieties of seeds.

146. When Did The Green Revolution Start In India?

1966.

147. Who Is Often Referred To As The Man Of The Trees?

Richard St. Barbe Baker

148. Which Types Of Plant And Animal Are More Sensitive To Over Exploitation Than Others?

The ones with longer life span and which breed slowly.

149. If A Species Of Plant Contains Selenium, The Soil In Which It Has Grown Certainly Contains?

Uranium.

150. What Constitutes A Major Part Of Antaractic Vegetation?

Lichens.

151. What Inhibits The Native Plant Life On Antarctica From Flourishing?

Drought.

152. Which Desert Is Often Frequented By Joyriders Leading To The Extinction Of This Flora And Fauna?

California.

153. Where Is The Valley Of Flowers Located?

Garhwal (Uttaranchal).

154. Which Group Of Plants Is Sensitive To Airborne Chemicals And Is Therefore Employed As Pollution Indicators?

Lichens.

155. Which Tree Is Popular As Green Gold Yet An Ecological Disaster?

Eucalyptus.

156. Which Are The Most Successful And Widespread Of All Land Plants?

Grasses.

157. Which Plant, Though The Best – Known Of All House Plants, Is The Most Endangered One In The Wild?

African violet.

158. When Did Flowering Plants Evolve On Earth?

Cretaceous period.

159. Which Is The First Living Being To Establish Themselves On Rocky Slopes?

Lichens.

160. The Maximum Of Photosynthetic Activities In Plants Take Place In?

Red light.

161. Which Was The First New World Plant To Take Root In The Soil Of The Old World?

Potato.

162. Watermelon Is A Native Of?

Africa.

163. Which Shrub Brought From Australia To Decorate Garden Hedges In India Has Become A Weed?

Lantana.

164. Christopher Columbus Brought Some Native Grains From Cuba To Europe, Where They Were Cultivated And Then Distrusted To The Entire World. What Were Those Gains?

Maize.

165. Eucalyptus Was Brought To Europe From?

Australia.

166. Cocoa Is A Native Of?

South America.

167. From Where Tobacco Was Brought To Europe?

South America.

168. Which Plant Is Known As The Gasoline Plant?

Euphorbia lathyris.

169. A Laxative Is Obtained From The Leaves Of A Plant Native To Egypt. Which Is That Plant?

Senna.

170. What Is The Study Of Trees As Individuals In Relation To Their Environment Known As?

Forest Autecology.

171. Which Subject Deals With The Relationship Between Human Groups And The Plant Species They Utilize?

Ethno botany.

172. Rows Of Trees And Plants Rose Especially To Combat Desiccating And Eroding Effects Of Winds On Crop And Renagelands Are Known As?

Shelter belts.

173. Which Living Beings Are Not Consumers?

Plants.

174. What Is The Benthos?

Plants and animals living at the bottom of a sea or lake.

175. What Is Bio – Monitors?

The plants that can be used to monitor pollutants.

176. What Is Mulch?

Dead plant material that accumulates on the ground.

177. Which Type Of Forest Is The Most Fertile Reservoir Of Wildlife?

Tropical rainforest.

178. One Third Of The Entire World’s Rain Forest Is In?

Brazil.

179. How Many Types Of Forest Fibres Are There?

Three.

180. What Is Known As A Miracle Crop?

Soya bean.

181. The Terrace Type Of Agriculture Was Developed In?

China.

182. A Plant Needs The Following Number Of Chemical Elements For Its Growth?

Sixteen.

183. Sweden – Slash And Burn – Farming Has Its Origin In?

Europe.

184. Which Is The Truly Domesticated Grain Entirely Dependent On Man For Its Survival?

Maize.

185. Which Explorer Of Plants Brought The Plant Producing The Drug Curare From The Amazon Basin To Europe?

Richard.

186. During Which Process Do Plants Release Energy?

Respiration.

187. From Which Plant Asafetida Is Prepared?

Ferula Foetida.

188. How Is Stem – Bleeding Of Sugarcane Is Caused?

By fungi.

189. Which Is The Instrument Used To Measure Root Pressure?

Manometer.

190. Gymnosperms Specially Have What?

Naked ovules.

191. Septal Pores Are Characteristic Of What?

Fungi.

192. Saprophyte Is Tricia Is Made Up Of What?

Capsule only.

193. What Is Ethnobotony?

It is the scientific study of relationship that exists between people and plants.

194. Who Coined The Term Ethnobotony?

John William Hershberger in 1895.

195. What Is Herbalsm?

Herbalsm is a traditional medicinal or folk medicine practice based on the use of plants and plant extracts.

196. Which Is The Medicinal Use Of Garlic?

Garlic is claimed to help prevent heart disease including atherosclerosis, high cholesterol, high blood pressure and cancer.

197. What Is Lords And Ladies?

It is common woodland plant species of the araceae common woodland plant species of the araceae family, found in northern Europe.

198. Who Are The First People To Have Discovered And Recognized The Energizing Effect Of Coffee Beam Plant?

The Ethiopians.

199. Which Plants Are Hugely Important To Humans?

Food plants such as cereals, vegetables, pulses, root caps, fruits and nuts.