Biology - Questions and Answers, General Study (GK)

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1491.

The genotypic ratio of monohybrid ratio is

(a)1 : 2 : 1

(b)1 : 3

(d)3 : 1

Comment

Answer is: A

1492.

The double helix model of DNA Was proposed by

(a)De Roberts

(b)Watson and Crick

(c)Hershey and Chase

(d)Griffith

Comment

Answer is: B

1493.

W. M. Stanley got Nobel Prize for

(a)DNA

(b)Virus

(c)RNA

(d)Bacteria

Comment

Answer is: B

1494.

Apical dominance in higher plants is due to

(a)Photoperiodism

(b)Enzymes

(c)Carbohydrates

(d)Hormones

Comment

Answer is: D

1495.

Consider the following groups.
I. Fungi
II. Fern
III. Angiosperms
IV. Gymnosperms
The correct chronological sequence of the origin of these plant groups is

(a)I, Il, IV, III

(b)II, I, IV, III

(c)I, ll, III, IV

(d)II, I, III, IV

Comment

Answer is: A

1496.

The pollen grains of flowers pollinated by insects are

(a)Smooth and cry

(b)Rough and sticky

(c)Rough and dry

(d)Large and showy

Comment

Answer is: B

1497.

The age of a tree can be determined by

(a)Measuring its height

(b)Measuring its diameter

(c)Analysing its sap

(d)Counting the growth rings of its stem

Comment

Answer is: D

1498.

Match list-I with list-II correctly and select your answer using the codes given below:
List-I List-II
a) Running water 1) Typha
b) Pond ecosystem 2) Hydrilla
c) Amphibian plant 3) Lotic
d) Submerged plant 4) Lentic
The below options are given in A B C D order:

(a)3 1 2 4

(b)4 3 1 2

(d)4 3 2 1

Comment

Answer is: C

1499.

Ground becomes slippery during the rainy season due to

(a)Brown algae

(b)Green algae

(c)Blue - green algae

(d)Mosses

Comment

Answer is: B

1500.

Which one of the following is a useful functional association between fungi and the roots of higher plants?

(a)Biofertilizer

(b)Coralloid root

(c)Lichen

(d)Mycorrhiza

Comment

Answer is: D

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Biology - Questions and AnswersPage 150

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