Zoology Practice MCQs (Most Important and Expected Questions) CSIR NET JRF Set 23

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Q.7 which secretion, released into the ailementary canal, contains no enzyme, but speeds up fat digestion?

a) bileb) intestinal juicec) mucusd) pancreatic juiccae) None of these

Answer: A

Q.8 which of the following normally enters the blood as it passes through the pancreas?

a) amino acidsb) glycogenc) insulin d) lipasee) None of these

Answer: C

Q.9 which of the following is the example of discontinuous variation?

a) blood groupb) heightc) intelligenced) weighte) None of these

Answer: A

Q.10 which of the following would be more prominent in a secretory cell than in the non secretory cell?

a) golgi apparatusb) mitochondriac) ribosomesd) pinocytotic vesiclese) None of these

Answer: A

Q.11 which of the following is both found in DNA and mRNA?

a) riboseb) thyaminec) sugar-phosphate chaind) double helix structuree) None of these

Answer: C

Q.12 which is carried by the molecule of transfer RNA?

a) an amino acid moleculeb) enzymes for protein synthesisc) information from the DNAd) sequence of codonse) None of these

Answer: A

Q.13 The populations of all the species in a given habitat are referred to as

a) biosphered) communityc) ecosphered) ecosysteme) None of these

Answer: D

Q.14 which of the following is not recycled in ecosystem?

a) carbonb) energyc) sulphurd) watere) None of these

Answer: B

Q.15 in most ecosystems, the greatest amount of energy flows through the,

a) secondary consumersb) herbivoresc) carnivoresd) decomposerse) None of these

Answer: D

Q.16 during which phase of meiosis are chiasmata formed?

a) prophase Ib) metaphase IIc) metaphase Id) telophase II

Answer: A

Q.17 Who proposed the mutation theory of evolution?

a) Lamarckb) Darwinc) De Vriesd) Wallacee) None of these

Answer: C

Q.18 During which phase of meiosis do homologous chromosomes separate?

a) prophase Ib) prophase IIc) anaphase Ie) None of these

Answer: A

Q.19 in a DNA molecule,the basis of Pyrimidine are

a) thymine and cytosineb) cytosine and guaninec) adenine and thymined) thymine and guaninee) None of these

Answer: A

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