300+ REAL TIME NEET Biology Objective Questions & Answers 2023

300+ TOP MCQs on Pteridophyta and Answers

NEET Biology is the vey important paper in the medical entrance exam. Here, you will discover the NEET Biology MCQs and Answers for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution . NEET Biology Pteridophyta Multiple Choice Questions

MCQs on Pteridophyta :

1. In which of the following groups would you place a plant that produces spores, lacks seeds and has vascular tissue?
(a) Bryophyte
(b) Algae
(c) Pteridophyte
(d) Gymnosperm

Answer

Answer: (c)

2. In Pteridophytes, the dominant generation is
(a) gametophytic
(b) haploid
(c) diploid
(d) triploid

Answer

Answer: (c)

3. Reduction division in pteridophytes occurs in
(a) Prothallus is formed
(b) Gametes are formed
(c) spores are formed
(d) sex organs are formed

Answer

Answer: (c)

4. Prothallus represents
(a) sporophytic phase in a fern
(b) gametophytic phase in a fern
(c) sporophytic phase in a gymnosperm
(d) gametophytic phase in a gymnosperm

Answer

Answer: (b)

5. Pteridophytes and Bryophytes differ in having
(a) Spermatozoids
(b) Archegonia
(c) Separate gametophytes
(d) conducting system

Answer

Answer: (d)

6. Which of the following is deemed to be vital in the development of seed habit?
(a) Heterospory
(b) Dependant sporophyte
(c) Free-living gametophyte
(d) Haplontic life cycle

Answer

Answer: (a)

7. Sporophytic and gametophytic phases are independent in
(a) Bryophytes
(b) Pteridophytes
(c) Phaeophytes
(d) Gymnosperms

Answer

Answer: (b)

8. ‘Club moss’ belongs to
(a) Fungi
(b) Algae
(c) Bryophyta
(d) Pteridophyta

Answer

Answer: (d)

9. Phloem is without ___________ in pteridophytes
(a) Bast fibres
(b) Companion cells
(c) Phloem parenchyma
(d) sieve cells

Answer

Answer: (b)

10. This group does not have seeds but has vascular tissues and produces spores
(a) Pteridophyta
(b) Bryophyta
(c) Angiosperms
(d) Gymnosperms

Answer

Answer: (a)

300+ TOP MCQs on Fermentation Process and Answers

MCQs on Fermentation Process :

1. Monascus purpureus is utilized in the production of
(a) citric acid
(b) ethanol
(c) statins
(d) streptokinase

Answer

Answer: (c)

2. The type of fermentation observed in yeasts is
(a) acrylic fermentation
(b) lactic acid fermentation
(c) pyruvic fermentation
(d) alcoholic fermentation

Answer

Answer: (d)

3. In lactic acid fermentation, the final electron acceptor is:
(a) Lactic acid
(b) Pyruvate
(c) Oxygen
(d) NAD

Answer

Answer: (b)

4. Which of these is not a product of fermentation?
(a) Lactate
(b) Oxygen
(c) Carbon dioxide
(d) Ethanol

Answer

Answer: (b)

5. Which of the following is not a vegetable or fruit-based fermented product?
(a) Wine
(b) Sauerkraut
(c) Beer
(d) Vinegar

Answer

Answer: (d)

6. One of the most commonly used fermented cereal amongst these is
(a) Wheat
(b) Bread
(c) Rice
(d) Yoghurt

Answer

Answer: (b)

7. Glucose molecule during the process of glycolysis is broken down into
(a) Four pyruvic acid
(b) Three pyruvic acid
(c) Two pyruvic acid
(d) One pyruvic acid

Answer

Answer: (c)

8. Fermentation occurs in the
(a) presence of oxygen
(b) absence of oxygen
(c) presence of nitrogen
(d) presence of carbon

Answer

Answer: (b)

9. The least yield of ATP is observed in
(a) aerobic respiration
(b) anaerobic respiration
(c) fermentation
(d) same in (a), (b), and (c)

Answer

Answer: (c)

10. Anaerobic respiration by yeast produces
(a) CO₂
(b) Wine and Beer
(c) Alcohol
(d) All of the above

Answer

Answer: (d)

300+ TOP MCQs on Porifera and Answers

MCQs on Porifera :

1. This about sponges is true
(a) one mouth, innumerable exits
(b) innumerable mouths, one exit
(c) large spacious stomach
(d) spicules are composed of chitin

Answer

Answer: (b)

2. _____________ is the name of the dried skeleton of ‘Venus flower basket’
(a) Euplectella
(b) Euspongia
(c) Leucosolenia
(d) Spongila

Answer

Answer: (a)

3. Members of phylum porifera are
(a) Mostly freshwater animals but few are marine entities
(b) Mostly marine animals but few are fresh water entities
(c) Exclusively freshwater animal
(d) Exclusively marine animals

Answer

Answer: (b)

4. Animals lacking excretory, respiratory and circulatory structures are
(a) Sponges
(b) Tapeworms
(c) Liver fluke
(d) Threadworms

Answer

Answer: (a)

5. These are ‘multicellular grade’ entity
(a) Vertebrates
(b) Sponges
(c) Prokaryotes
(d) Coelenterates

Answer

Answer: (b)

6. The group of animals to which Sycon belongs, can be best described as
(a) Multicellular having tissue organization, but not a body cavity
(b) Unicellular or acellular
(c) Multicellular with a gastrovascular
(d) Multicellular without any tissue organization

Answer

Answer: (d)

7. Collared, flagellated cells that cover large parts of the inner chambers of sponges, helping water circulation to continue are
(a) Porocytes
(b) Choanocytes
(c) Amoebocytes
(d) Pinacocytes

Answer

Answer: (b)

8. This is a flagellated larva of Leucosolenia
(a) Maggot
(b) Kedia
(c) Planula
(d) Parenchymula

Answer

Answer: (d)

9. Poriferan evolution from protozoans is evidenced by animals such as
(a) Paramecium
(b) Euglena
(c) Chlamydomonas
(d) Volvox

Answer

Answer: (d)

10. The chamber common to all the types of canal system of sponges is
(a) Excurrent canal
(b) Radial chamber
(c) Incurrent canal
(d) Paragastric cavity

Answer

Answer: (d)

300+ TOP MCQs on Archaebacteria and Answers

MCQs on Archaebacteria :

1. Some bacteria thrive in extreme environment conditions such as absence of oxygen, high salt concentration, high temperature and acidic pH. It is
(a) Eubacteria
(b) Cyanobacteria
(c) Archaebacteria

Answer

Answer: (c)

2. This about archaebacteria is true
(a) All halophiles
(b) all photosynthetic
(c) old living entities
(d) all fossils

Answer

Answer: (c)

3. Some hyperthermophilic organisms that grow in highly acidic (pH2) habitats belong to the two groups called
(a) Cyanobacteria and Diatoms
(b) Liverworts And Yeasts
(c) Protists And Mosses
(d) Eubacteria And Archaea

Answer

Answer: (d)

4. This is found in extreme saline conditions
(a) eubacteria
(b) cyanobacteria
(c) archaebacteria
(d) mycobacteria

Answer

Answer: (c)

5. Most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorized as
(a) heterotrophic bacteria
(b) archaebacteria
(c) cyanobacteria
(d) chemosynthetic autotrophs

Answer

Answer: (a)

6. Methanogens belong to
(a) slime moulds
(b) dinoflagellates
(c) eubacteria
(d) archaebacteria

Answer

Answer: (d)

7. Archaebacteria is different from eubacteria in having
(a) cell shape
(b) mode of reproduction
(c) mode of nutrition
(d) cell membrane structure

Answer

Answer: (d)

8. Methanococcus, Thermococcus and Methanobacterium exemplify
(a) bacteria that contain a cytoskeleton and ribosomes
(b) bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria
(c) archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled
(d) archaebacteria that contain protein homologous to eukaryotic core histones

Answer

Answer: (c)

9. After the new classification of living organisms into three domains of life (bacteria, archaea and eukarya) which one of the following is true about archaea?
Archaea ____________
(a) completely differ from prokaryotes
(b) completely differ from both eukaryotes and prokaryotes
(c) have some novel features that are absent in other eukaryotes and prokaryotes
(d) resemble eukarya in all respects

Answer

Answer: (c)

10. Which of the following are likely to be present in deep sea water
(a) eubacteria
(b) archaebacteria
(c) saprophytic fungi
(d) blue-green algae

Answer

Answer: (b)

300+ TOP MCQs on Fertilization and Answers

MCQs on Fertilization :

1. Sperm lysin, the enzymatic substance produced by sperms in mammals is known as
(a) cryanogamone
(b) hyaluronic acid
(c) androgamone
(d) hyaluronidase

Answer

Answer: (d)

2. Egg development without fertilization is known as
(a) Parthenogenesis
(b) Metagenesis
(c) Gametogenesis
(d) Oogenesis

Answer

Answer: (a)

3. After a sperm has penetrated an ovum in the process of fertilization, entry of further sperms is prevented by
(a) condensation of yolk
(b) development of the vitelline membrane
(c) formation of fertilization membrane
(d) development of the pigment coat

Answer

Answer: (c)

4. In the process of fertilization, this is true
(a) entry of sperm activates the egg for completing meiosis
(b) only one sperm reaches the egg and enters it
(c) only the acrosome of the sperm enters the egg
(d) two haploid nuclei fuse and immediately divide to produce two nuclei which are again haploid

Answer

Answer: (a)

5. In rabbits, humans and other placental mammals, fertilization occurs in
(a) vagina
(b) ovary
(c) fallopian tubes
(d) uterus

Answer

Answer: (c)

6. In female mammals Bartholin’s glands open into the
(a) Fallopian tubes and release a secretion which makes sperms motile
(b) uterus and release a lubricating fluid during the birth of young ones
(c) vestibule and release a lubricating fluid in the vagina
(d) urinary bladder and assist in release of urine

Answer

Answer: (c)

7. This is a minute cell which separates from the animal egg during maturation is known as
(a) Primary oogonia
(b) secondary oogonia
(c) primary spermatogonia
(d) polar bodies

Answer

Answer: (d)

8. The nutritive medium for the ejaculated sperms is given by
(a) fallopian tube
(b) uterine lining
(c) seminal fluid
(d) vaginal fluid

Answer

Answer: (c)

9. This helps in the penetration of egg by the sperm
(a) fertilization membrane
(b) antifertilizin
(c) sperm lysin
(d) fertilizin

Answer

Answer: (c)

10. In a man, sperms move after ejaculation at a rate of nearly
(a) 2 to 4 inches/minute
(b) 2 to 4 mm/minute
(c) 2 to 4 cm/minute
(d) 2 to 4 feet/minute

Answer

Answer: (b)

300+ TOP MCQs on Manures and Fertilizers and Answers

MCQs on Manures and Fertilizers :

1. Green manure plants are
(a) Poaceae
(b) Solanaceae
(c) Leguminosae
(d) Compositae

Answer

Answer: (c)

2. This chemical fertilizer is essential for better rhizobial nitrogen fixation
(a) calcium
(b) potassium
(c) sodium
(d) phosphorus

Answer

Answer: (d)

3. Azolla is used as a biofertilizer as it possesses
(a) humus in large quantities
(b) rhizobium
(c) mycorrhiza
(d) cyanobacteria

Answer

Answer: (d)

4. Pyrethrin is obtained from
(a) Chrysanthemum cinerariifolium
(b) Azadirachta indica
(c) Urtica dioica
(d) Tagetes erecta

Answer

Answer: (a)

5. This is not included in organic farming
(a) crop rotation
(b) chemical fertilizer
(c) green manures
(d) compost and farmyard manures

Answer

Answer: (b)

6. Appropriate use of cow dung is made in
(a) medicine
(b) fuel
(c) manure
(d) building/construction material

Answer

Answer: (c)

7. In children, this disease is caused due to excess nitrate fertilizers usage
(a) mumps
(b) jaundice
(c) septicemia
(d) methaemoglobinaemia

Answer

Answer: (d)

8. For paddy, the best fertilizer is
(a) Bacillus polymyxa
(b) Bacillus megaterium
(c) Azolla pinnata
(d) Rhizobium meliloti

Answer

Answer: (c)

9. Composited manure is formed from
(a) farm and household refuse
(b) animal refuse and rotted vegetable
(c) organic wastes from where biogas extraction takes place
(d) green and farmyard manure

Answer

Answer: (b)

10. A green manure is
(a) Maize
(b) Rice
(c) Sorghum
(d) Sesbania

Answer

Answer: (d)