Category: NEET Biology Objective Questions

300+ TOP MCQs on Spermatogenesis 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 Spermatogenesis Multiple Choice Questions

MCQs on Spermatogenesis :

1. This amongst the following statements is incorrect. Human spermatozoa usually
(a) moves with the help of their tails
(b) contains enzyme in their head which aids in penetration of the ovum
(c) are released in large numbers after a few days of abstinence
(d) at a concentration of 1 million/ml of ejaculate will fertilize the ovum

Answer

Answer: (d)

2. Polar bodies are formed during
(a) Oogenesis
(b) Spermatogenesis
(c) Gametogenesis
(d) Spermateleosis

Answer

Answer: (a)

3. The correct sequence of cell stage in spermatogenesis is
(a) Spermatocytes – Spermatids – Spermatogonia – Spermatozoa
(b) Spermatogonia – Spermatids – Spermatocytes – Spermatozoa
(c) Spermatocytes – Spermatogonia – Spermatids – Spermatozoa
(d) Spermatogonia – Spermatocytes – Spermatids – Spermatozoa

Answer

Answer: (d)

4. In spermatogenesis, the phases of maturation involve
(a) formation of spermatids from primary spermatocytes through meiosis
(b) Growth of spermatogonia into primary spermatocytes
(c) formation of spermatogonia from gonocytes through mitosis
(d) formation of oogonia from spermatocytes through meiosis

Answer

Answer: (a)

5. This happens during spermatogenesis
(a) Meiosis
(b) Mitosis
(c) Meiosis and mitosis
(d) None of these

Answer

Answer: (c)

6. The actual genetic section of sperm is its
(a) Acrosome
(b) Tail
(c) Middle piece
(d) Head

Answer

Answer: (d)

7. The process of spermatogenesis is induced by
(a) TSH
(b) FSH
(c) MSH
(d) ACTH

Answer

Answer: (b)

8. The number of spermatozoa, a single primary spermatocyte finally produced in spermatogenesis is
(a) 2
(b) 4
(c) 6
(d) 8

Answer

Answer: (b)

9. The acrosome of sperm is formed from
(a) Mitochondria of spermatid
(b) Golgi complex of spermatid
(c) Nucleus of spermatid
(d) Centrosome of spermatid

Answer

Answer: (b)

10. Which of the following cells is immortal?
(a) Glomerular cells
(b) Somatic cells
(c) Cells of pituitary
(d) Germ cells

Answer

Answer: (d)

300+ TOP MCQs on Chloroplasts 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 Chloroplasts Multiple Choice Questions

MCQs on Chloroplasts :

1. The bright colours of ripe fruits is due to
(a) Chromoplasts
(b) Chloroplasts
(c) Amyloplasts
(d) Leucoplasts

Answer

Answer: (a)

2. Factory for synthesis of sugars in autotrophic eukaryotes
(a) Mitochondria
(b) Chloroplast
(c) Ribosome
(d) Endoplasmic reticulum

Answer

Answer: (b)

3. Stroma is the ground material of which of these
(a) Ribosomes
(b) Lysosomes
(c) Mitochondria
(d) Chloroplasts

Answer

Answer: (d)

4. When green tomatoes fruits turn to red, then
(a) new chromoplasts are formed
(b) chloroplasts are disintegrated and get converted into chromoplasts
(c) chromoplasts are changed to chloroplasts
(d) none of these

Answer

Answer: (b)

5. The thylakoid in chloroplasts are arranged as
(a) Stacked discs
(b) interconnected disc
(c) interconnected sacs
(d) none of the above

Answer

Answer: (a)

6. If we separate the cell organelles of a living cell, then which part should be alive
(a) Ribosome
(b) cell wall
(c) endoplasmic reticulum
(d) chloroplast

Answer

Answer: (d)

7. Extranuclear DNA is found in
(a) Ribosome
(b) Chloroplast
(c) Golgi apparatus
(d) endoplasmic reticulum

Answer

Answer: (b)

8. In chloroplasts, where do light reactions occur
(a) outer membrane
(b) inner membrane
(c) thylakoid membrane
(d) stroma

Answer

Answer: (c)

9. In chloroplasts, the parallel layering of membranes is suited for
(a) maximum exposure of enzymes
(b) maximum light absorption
(c) minimum light absorption so cells can maintain their temperature
(d) all of these

Answer

Answer: (b)

10. Chlorophyll in chloroplasts is present in
(a) Stroma
(b) outer membrane
(c) thylakoids
(d) inner membrane

Answer

Answer: (c)

300+ TOP MCQs on Hormonal Control Digestion 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 Hormonal Control Digestion Multiple Choice Questions

MCQs on Hormonal Control Digestion :

1. Enterogastrone is
(a) hormone secreted by intestinal mucosa
(b) hormone secreted by mucosa
(c) secreted by endocrine glands related to digestion
(d) hormone secreted by gastric mucosa

Answer

Answer: (a)

2. Juice containing sodium glycocholate is secreted under the influence of
(a) enterogastrone
(b) cholecystokinin
(c) enterokinin
(d) secretin

Answer

Answer: (b)

3. Gall bladder contractions and Pancreatic secretion are triggered by
(a) enterogastrone
(b) enterocrinin
(c) gastrin
(d) cholecystokinin

Answer

Answer: (d)

4. Cholecystokinin hormone which is released from the intestinal epithelium triggers
(a) release of bile from gallbladder
(b) conversion of protein to peptones
(c) conversion of fats into glycerol
(d) secretion of pancreatic juice

Answer

Answer: (a)

5. The hormone secretin triggers
(a) gallbladder
(b) pancreas
(c) crypts of Lieberkuhn
(d) stomach

Answer

Answer: (b)

6. This regulates the enzymatic quantity in pancreatic juice
(a) Cholecystokinin
(b) Gastrin
(c) Pancreozymin
(d) Secretin

Answer

Answer: (c)

7. In a mammal, the release of pancreatic juice from the pancreas is triggered by
(a) cholecystokinin
(b) trypsinogen
(c) secretin
(d) enterokinase

Answer

Answer: (c)

8. This body part secretes secretin hormone
(a) Oesophagus
(b) Ileum
(c) Duodenum
(d) Stomach

Answer

Answer: (c)

9. The hormone gastrin is secreted by
(a) pancreas
(b) liver
(c) stomach
(d) intestine

Answer

Answer: (c)

10. Secretion of gastric juice is controlled by
(a) cholecystokinin
(b) gastrin
(c) enterogastrone
(d) none of the above

Answer

Answer: (b)

300+ TOP MCQs on Biomass Energy 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 Biomass Energy Multiple Choice Questions

MCQs on Biomass Energy :

1. Biomass is used in the production of
(a) fibers
(b) chemicals
(c) transportation fuels
(d) biochemicals

Answer

Answer: (c)

2. Production of bio ethanol is through fermentation of ________ and starch components
(a) alcohol
(b) sugar
(c) milk
(d) acid

Answer

Answer: (b)

3. This is also called as a bio gas
(a) bio butanol
(b) biodiesel
(c) bio ethanol
(d) bio methane

Answer

Answer: (d)

4. In bio methane, the percentage of carbon dioxide is
(a) 55-60
(b) 35-45
(c) 30-40
(d) 32-43

Answer

Answer: (d)

5. By-products generated during rectification of bio ethanol is utilized as
(a) sheep feed
(b) cow feed
(c) dog feed
(d) pig feed

Answer

Answer: (c)

6. Bio ethanol is mixed with ________ to prepare transport fuel
(a) oil
(b) petrol
(c) kerosene
(d) diesel

Answer

Answer: (b)

7. Bio ethanol is denatured alcohol, also referred to as
(a) methylene
(b) ethylene
(c) ethylene glycol
(d) methylated spirit

Answer

Answer: (d)

8. This forestry material is used as biomass
(a) fish oil
(b) logging residues
(c) manure
(d) tallow

Answer

Answer: (b)

9. The aerobic digestion of sewage is utilized in the production of
(a) metal articles
(b) bio fuels
(c) biomass
(d) synthetic fuels

Answer

Answer: (b)

10. This is an example of starch crops biomass feed stocks
(a) corn stover
(b) wheat straw
(c) orchard prunings
(d) sugar cane

Answer

Answer: (d)

300+ TOP MCQs on ABA and Other Growth Regulators 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 ABA and Other Growth Regulators Multiple Choice Questions

MCQs on ABA and Other Growth Regulators :

1. Abscission zone can be induced for formation by
(a) abscisic acid
(b) cytokinins
(c) gibberellins
(d) auxins

Answer

Answer: (a)

2. Presence of this in the seed is linked with dormancy
(a) abscisic acid
(b) gibberellic acid
(c) starch
(d) ethylene

Answer

Answer: (a)

3. Abscisic acid treatment results in
(a) root elongation
(b) stomatal closure
(c) stem elongation
(d) leaf expansion

Answer

Answer: (b)

4. ABA contains
(a) one asymmetric and two symmetric carbon atoms
(b) one symmetric and two asymmetric carbon atoms
(c) one asymmetric carbon atom
(d) one symmetric carbon atom

Answer

Answer: (c)

5. Morphactins are
(a) synthetic auxins
(b) synthetic gibberellins
(c) synthetic growth regulators
(d) none of these

Answer

Answer: (c)

6. Dormin is a
(a) abscisic acid
(b) growth promoter
(c) auxin
(d) none of these

Answer

Answer: (a)

7. This is wound hormone
(a) phyllocaline
(b) auxin
(c) hormone only
(d) necrohormone

Answer

Answer: (d)

8. This is a plant hormone
(a) acetylene
(b) dormin
(c) formalin
(d) all of these

Answer

Answer: (b)

9. This is a naturally occurring growth inhibitor
(a) NAA
(b) IAA
(c) GA
(d) ABA

Answer

Answer: (d)

10. Abscisic acid regulates
(a) leaf fall and dormancy
(b) cell division
(c) cell elongation and cell wall formation
(d) shoot elongation

Answer

Answer: (a)

300+ TOP MCQs on Coelenterata 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 Coelenterata Multiple Choice Questions

MCQs on Coelenterata :

1. Which coelenterate is not polymorphic
(a) Vellela
(b) Physalia
(c) Porpita
(d) Adamsia

Answer

Answer: (d)

2. This group is commonly known as ‘sea stick’
(a) Porifera
(b) Coelenterata
(c) Arthropoda
(d) Echinodermata

Answer

Answer: (b)

3. This does not belong to Phylum Coelenterata
(a) Sea cucumber
(b) Sea feather
(c) Sea pen
(d) Sea fan

Answer

Answer: (a)

4. A coelenterate that is commonly referred to as ‘fresh water polyp’ is
(a) Obelia
(b) Physalia
(c) Hydra
(d) Aurelia

Answer

Answer: (c)

5. This is a special character of coelenterata occurring only in them
(a) Flame cells
(b) Hermaphroditism
(c) Nematocysts
(d) Polymorphism

Answer

Answer: (c)

6. The characteristic larva in coelenterates is
(a) Oncosphere
(b) Rhabditiform
(c) Planula
(d) Cysticercus

Answer

Answer: (c)

7. Oxygen in coelenterates is supplied to different tissues by
(a) Plasma
(b) Diffuses through integuments
(c) Blood pigment
(d) Tracheal tubes

Answer

Answer: (b)

8. The class of coelenterata in which the medusa and polyp both are found in one animal is
(a) Anthozoa
(b) Hydrozoa
(c) Scyphozoa
(d) None of the above

Answer

Answer: (b)

9. This phylum shows the presence of nerve cells and absence of nerves
(a) Coelenterata
(b) Porifera
(c) Nemathelminthes
(d) Platyhelminthes

Answer

Answer: (a)

10. This is a characteristic feature of coelenterata
(a) Polyp
(b) Gastrovascular cavity
(c) All are marine
(d) Presence of tentacles around mouth

Answer

Answer: (b)