Biology Questions: Paper - 2

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Biology Model Question Paper - 2

  

1.

2n = l6 in a primary spermatocyte which is in metaphase of first meiotic division. What shall be the total number of chromatids in each of the secondary spermatocyte?
(A) 8
(B) l6
(C) 24
(D) 32

Answer: (B)

2.

A female Anopheles mosquito can be recognized by
(A) Proboscis and palpi are long and more or less of equal length
(B) Proboscis long and palpi short
(C) Proboscis short and palpi long
(D) Both proboscis and palpi are short

Answer: (A)

3.

Which one of the following pairs is an example for lateral meristem?
(A) Interfascicular cambium and phellem
(B) Procambium and phelloderm
(C) Phellogen and fascicular cambium
(D) Phellogen and phelloderm

Answer: (C)

4.

Which one of the following is the most primitive ancestor of man?
(A) Homo habilis
(B) Australopithecus
(C) Rampithecus punjabicus
(D) Homo neanderthalensis

Answer: (C)

5.

Which one of the following is polysaccharide?
(A) Glycogen
(B) Sucrose
(C) Lactose
(D) Maltose

Answer: (A)

6.

Which one of the following is NOT the reason for very high load of bilirubin in a newborn?
(A) The liver of the newborn is too young to cope up with the heavy load of bilirubin.
(B) Excessive red blood corpuscles in the newborn burst, releasing the bilirubin.
(C) Insoluble bilirubin in the intestine is reabsorbed by the blood.
(D) Mother’s milk contains a high amount of bilirubin.

Answer: (D)

7.

Which one of the following is NOT the function of insulin?
(A) Increase the oxidation of glucose in the cells.
(B) Increases the permeability of cell membrane to glucose.
(C) Initiates the formation of hepatic glycogen from excess of glucose.
(D) Initiates the conversion of glycogen to glucose.

Answer: (D)

8.

Which one of the following is not related to guttation?
(A) Water is given out in the form of droplets
(B) Water given out is impure
(C) Water is given out during daytime
(D) none of the above

Answer:  (C)

9.

Which one of the following is NOT an antitranspirant?
(A) PMA
(B) BAP
(C) Silicon oil
(D) Low viscosity

Answer:  (B)

10.

Which one of the following is not a second messenger in hormone action?
(A) Calcium
(B) Sodium
(C) cAMP
(D) cGMP

Answer: (B)

11.

Which one of the following is NOT a method of soil conservation?
(A) Overgrazing
(B) Mulching
(C) Crop rotation
(D) Strip cropping

Answer: (A)

12.

Which one of the following is mainly responsible for green house effect?
(A) SO2
(B) CO2
(C) CO
(D) O2

Answer: (B)

13.

Which one of the following is correct?
(A) Introns are present in m-RNA and exons are present in t-RNA
(B) Codons are present in m-RNA and anticodons in t-RNA
(C) Every intron is a set of three terminator codons
(D) Exons are present in eukaryotes while introns are present in prokaryotes

Answer:  (B)

14.

Which one of the following is an exotic carp species?
(A) Barbus stigma
(B) Cyprinus carpio
(C) Labeo bata
(D) Cirrhinus mrigala

Answer: (B)

15.

Which one of the following is an example of chlorophyllous thallophyte?
(A) Volvarialla
(B) Spirogyra
(C) Nephrolepis
(D) Gnetum

Answer:  (B)