Category: NEET Biology Objective Questions

300+ TOP MCQs on Coelom 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 Coelom Multiple Choice Questions

MCQs on Coelom :

1. Find the correct match
(a) Molluscs – acoelomate
(b) Platyhelminthes – coelomate
(c) Aschelminthes – pseudocoelomate
(d) Insects – pseudocoelomate

Answer

Answer: (c)

2. The fluid that comes out of earthworm while piercing it (without damaging its gut) is
(a) slimy mucous
(b) excretory fluid
(c) hemolymph
(d) coelomic fluid

Answer

Answer: (d)

3. Which of the following is not true about Annelida?
(a) Ventral nerve cord
(b) Closed circulatory system
(c) Segmentation
(d) Pseudocoelom

Answer

Answer: (d)

4. How platyhelminthes differ from annelids?
(a) bilateral symmetry
(b) pseudocoel
(c) body cavity is absent
(d) none of the above

Answer

Answer: (b)

5. Where does true coelom present in the body?
(a) between mesoderm and endoderm (body wall)
(b) between body wall and ectoderm
(c) mesoderm and ectoderm
(d) ectoderm and endoderm

Answer

Answer: (a)

6. The body cavity found in echinoderms and chordates is
(a) haemocoel
(b) enterocoelom
(c) pseudocoelom
(d) schizocoelom

Answer

Answer: (b)

7. Which of the following develops into pseudocoelom?
(a) Archenteron
(b) Blastocoel
(c) Embryonic mesoderm
(d) Blastopore lip

Answer

Answer: (b)

8. Which of the following has haemocoel?
(a) Earthworm
(b) Hydra
(c) Cockroach
(d) Nereis

Answer

Answer: (c)

9. Common characteristics of coelenterates and sponges are
(a) triploblastic and pseudocoelomate
(b) triploblastic and acoelomate
(c) diploblastic and acoelomate
(d) monoblastic and acoelomate

Answer

Answer: (c)

10. The characteristic feature of Ascaris is
(a) pseudocoelom and no metamerism
(b) true coelom and no metamerism
(c) pseudocoelom and metamerism
(d) true coelom and metamerism

Answer

Answer: (a)

300+ TOP MCQs on Rhizopus and Answers Online Exam Quiz

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 Rhizopus Multiple Choice Questions

MCQs on Rhizopus :

1. The cell wall of most of the fungi contains ________.
(a) Hemicellulose
(b) Chitin
(c) Peptidoglycan
(d) Cellulose

Answer

Answer: (b)

2. Absorptive heterotrophic mode of nutrition is present in_______.
(a) Pteridophytes
(b) Bryophytes
(c) Fungi
(d) Algae

Answer

Answer: (c)

3. Zygospore formation is a characteristic feature of_______.
(a) Mucour/ Rhizopus
(b) Puccinia
(c) Alternaria
(d) Penicillium

Answer

Answer: (a)

4. Asexual reproduction in Rhizopus is by the formation of_______.
(a) Zygospores
(b) Motile zoospores
(c) Sporangiospores
(d) Zoogametes

Answer

Answer: (c)

5. Which of the following class does Rhizopus belong to?
(a) Ascomycetes
(b) Chytridiomycetes
(c) Deuteromycetes
(d) Zygomycetes

Answer

Answer: (d)

6. ________ is commonly known as black bread mould.
(a) Rhizobium sp
(b) Rhizopus oryzae
(c) Rhizopus nedosus
(d) Rhizopus stolonifer

Answer

Answer: (d)

7. Sexual reproduction in Rhizopus takes place by fusion of_______.
(a) Two sporangia
(b) Two gametangia
(c) Two gametes
(d) Two hyphae

Answer

Answer: (b)

8. Mycelium of Rhizopus is
(a) Aseptate and multinucleate
(b) Septate and multinucleate
(c) Aseptate and uninucleate
(d) Septate and coenocyte

Answer

Answer: (a)

9. Meiosis occurs in the life cycle of Rhizopus during_______.
(a) Asexual reproduction
(b) Formation of gametangium
(c) Germination of zygospores
(d) Formation of sporangium

Answer

Answer: (c)

10. Asexual reproduction in Rhizopus is by the formation of_______.
(a) Chlamydospores
(b) Aplanospores
(c) Sporangiospores
(d) All of the above

Answer

Answer: (d)

300+ TOP MCQs on Parts Of Plants 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 Parts Of Plants Multiple Choice Questions

MCQs on Parts Of Plants :

1. Which of the following factors promotes the opening of the stomatal aperture?
(a) A decrease in guard cell turgidity
(b) When the outer walls of the guard cells contracts
(c) Radial orientation of the cellulose microfibrils in the cell wall of the guard cells
(d) The longitudinal orientation of the cellulose microfibrils in the cell wall of guard cells

Answer

Answer: (c)

2. Which of the following is made of dead cells?
(a) Phloem
(b) Phellem
(c) Collenchyma
(d) Xylem parenchyma

Answer

Answer: (b)

3. Which of the following statement are true about the Tyloses – the balloon-shaped structures?
(a) Characterise the sapwood
(b) Original in the lumen of vessels
(c) Are linked to the ascent sap through xylem vessels
(d) Are extensions of the xylem parenchyma cells into vessels

Answer

Answer: (d)

4. Which of the following events takes place in a ring girdled plant?
(a)  The eath of the root first
(b) The death of the shoot first
(a) The shoots and the root dies first
(d) Neither the shoot nor the root will die

Answer

Answer: (c)

5. This is one of the most recent and valid explanations for stomatal movements.
(a) Starch hydrolysis
(b) Transpiration
(c) Guard cell photosynthesis
(d) Potassium efflux and the influx

Answer

Answer: (d)

6. Which of the following are the primary water-conducting elements of xylem in gymnosperms?
(a) Fibres
(b) Vessels
(c) Tracheids
(d) Transfusion tissue

Answer

Answer: (c)

7. Which of the following is not a lateral meristem?
(a) Phellogen
(b) Cork cambium
(c) Intercalary meristem
(d) Interfascicular cambium

Answer

Answer: (c)

8. In monocots, grafting is not possible as _________
(a) They show parallel venation
(b) they have scattered vascular bundles
(c) they lack cambium
(d) they are herbaceous

Answer

Answer: (c)

9. Vascular bundles are closed in monocots as:
(a) presence of vascular cambium between xylem and phloem
(b) presence of xylem and phloem
(c) absence of vascular cambium
(d) xylem and phloem occur in separate bundles

Answer

Answer: (c)

10. Difference between heartwood and sapwood is that heartwood
(a) shows the presence of fibres and rays
(b) has dead and non-conducting elements
(c) lacks parenchyma and vessels
(d) is susceptible to pathogens and pests

Answer

Answer: (b)

300+ TOP MCQs on Amniocentesis 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 Amniocentesis Multiple Choice Questions

MCQs on Amniocentesis :

1. Amniocentesis, chorionic villi and alpha-fetoprotein sampling are performed to determine_____.
(a) The most likely date of birth of the foetus
(b) Whether the baby will be normal or abnormal
(c) Whether the mother has a genetic abnormality
(d) A and B

Answer

Answer: (b)

2. Which of the following tests cannot be examined by Amniocentesis procedure?
(a) Chromosome analysis
(b) Detecting genetic defects
(c) Maturity of fetal lungs
(d) None of these

Answer

Answer: (d)

3. The fluid sample required for performing the Amniocentesis test is ________.
(a) The amnion
(b) The placenta
(c) The liquid surrounding the immediate fetus
(d) All of the above

Answer

Answer: (c)

4. How many days are required for the Amniocentesis tests results?
(a) 1 day
(b) 1-2 days
(c) 1-2 weeks
(d) 3-4 weeks

Answer

Answer: (d)

5. The amniocentesis procedure is not done before the _________ week after conception.
(a) 4th-5th
(b) 6th-8th
(c) 10th-12th
(d) 15th-16th

Answer

Answer: (d)

6. Which of these procedures has the least risk for an unborn child?
(a) Amniocentesis
(b) Alpha-fetoprotein sampling
(c) Chorionic villi sampling
(d) All have the same risk level

Answer

Answer: (b)

7. Amniocentesis is a  prenatal diagnostic test, which can also determine whether an unborn child will have __________ or not.
(a) Obesity
(b) Diabetes
(c) Down’s syndrome
(d) All of the above

Answer

Answer: (c)

8. Which of the following sentence is true for the chorion?
(a) The organ in the uterus connected to the fetus by the umbilical cord
(b) The sac or pouch-like organ within  uterus containing the amniotic fluid surrounding the fetus
(c) A membrane developing around an embryo, contributing to the formation of the placenta
(d) None of the above

Answer

Answer: (c)

9. Which of the following procedure is involved in injecting a small flexible plastic tube into the uterus through the vagina?
(a) Amniocentesis
(b) Alpha-fetoprotein screening
(c) Chorionic villi sampling
(d) None of the above

Answer

Answer: (c)

10. Which of the following medical conditions are responsible for producing incorrect Alpha-fetoprotein (AFP) screening results and indicating a fetus has genetic defects?
(a) The mother is anaemic
(b) The mother has Rh-negative blood
(c) The date of conception has been miscalculated
(d) All the above

Answer

Answer: (b)

300+ TOP MCQs on Structural Organization in Plants and Animals 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 Structural Organization in Plants and Animals Multiple Choice Questions

MCQs on Structural Organization in Plants and Animals :

1. This statement about epithelial tissue is incorrect
(a) epithelial cells rest on a cellular basement membrane splitting it from underlying connective tissues
(b) covers the external body surface and the internal surface of some organs
(c) adjacent cells are held by cell junctions with very little extracellular material
(d) No blood vessels that supply nutrients to the epithelial cells

Answer

Answer: (a)

2. The large amoeboid cells found in areolar tissue and are also part of our innate immune system are known as:
(a) Mast cells
(b) Macrophages
(c) Adipocytes
(d) Fibroblasts

Answer

Answer: (b)

3. What are the glands referred to as when secretary granules leave cells by exocytosis with no loss of other cellular material
(a) Merocrine
(b) Holocrine
(c) Autocrine
(d) Apocrine

Answer

Answer: (a)

4. In humans, bipolar neurons are found in
(a) Spinal cord
(b) Brain
(c) Olfactory epithelium
(d) Embryonic phases

Answer

Answer: (c)

5. This about Periplaneta americana is incorrect
(a) Mosaic vision
(b) Excretion by structures – malphigian tubules
(c) Paurometabolous development
(d) Hemolymph delivers oxygen to tissues

Answer

Answer: (d)

6. This structure has dense irregular connective tissue
(a) Cartilage
(b) Ligaments
(c) Tendons
(d) Skin

Answer

Answer: (d)

7. In the bodies of complex animals, the most widely distributed and abundant tissue is
(a) Neural
(b) Muscular
(c) Connective
(d) Epithelium

Answer

Answer: (c)

8. Sperms are stored in which part of the reproductive system in male cockroaches
(a) Mushroom glands
(b) Seminal vesicles
(c) Testes
(d) Vas deferens

Answer

Answer: (b)

9. The role of the gap junction is to
(a) separate two cells from each other
(b) Prevent substances from leaking across a tissue
(c) Carry out cementing to keep adjacent cells together
(d) Enable communication between adjoining cells by connecting the cytoplasm for quick ion transfer, small molecules and some large molecules

Answer

Answer: (d)

10. In comparison with humans, the erythrocytes in frogs are
(a) nucleated along with the presence of haemoglobin
(b) no nucleus but with haemoglobin
(c) few and very much small
(d) nucleated and without haemoglobin

Answer

Answer: (a)

300+ TOP MCQs on Auxin and Answers Quiz Exam Test

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 Auxin Multiple Choice Questions

MCQs on Auxin :

1. Application of ________ can delay abscission of fruits and leaves at early stages
(a) gibberelic acid
(b) ethylene
(c) auxin
(d) cytokinin

Answer

Answer: (c)

2. Flowering can be induced in pineapple by application of
(a) IAA, IBA
(b) NAA, 2,4­-D
(c) Phenyl acetic acid
(d) Cytokinin

Answer

Answer: (b)

3. Find the incorrect match
(a) Abscissic acid ­- Stomatal closure
(b) IAA ­- Cell wall elongation
(c) Cytokinin ­- Cell division
(d) Gibberellic acid ­- Leaf abscission

Answer

Answer: (d)

4. Uneven distribution of _______ results in phototropic curvature
(a) phytochrome
(b) auxin
(c) gibberellin
(d) cytokinin

Answer

Answer: (b)

5. The Avena curvature test is an accurate bioassay for
(a) ABA
(b) GA3
(c) IAA
(d) Ethylene

Answer

Answer: (c)

6. Which one of these is commonly used synthetic auxin
(a) NAA
(b) IAA
(c) IBA
(d) GA

Answer

Answer: (a)

7. Auxin is transported polarly. Mostly, auxin movement is
(a) acropetal
(b) basipetal
(c) centripetal
(d) both (a) and (c)

Answer

Answer: (b)

8. Removal of apical bud results in
(a) more axillary buds
(b) flowering ceases
(c) more lateral branches
(d) plant growth ceases

Answer

Answer: (c)

9. Commonly applied hormone in tea plantation is
(a) abscisic acid
(b) ethylene
(c) indole-­3-­acetic acid
(d) zeatin

Answer

Answer: (c)

10. Which of the following combination of hormones will promote differentiation of shoot as well as root in tissue culture?
(a) Gibberellin and abscisic acid
(b) Auxin and abscisic acid
(c) IAA and gibberellin
(d) Auxin and cytokinin

Answer

Answer: (d)