Biology - Questions and Answers, General Study (GK)

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711.

The age of a tree can he found by

(a)Measuring its height

(b)Analysis of its sap

(c)Measuring its diameter

(d)Counting the annual growth rings in a section of its stem

Comment

Answer is: D

712.

Secondary growth in plants refers to the

(a)Growth in length and development of new branches after the plant starts flowering

(b)Development of secondary organs afer the plant attains maturity

(c)Formation of secondary tissues by the activity of lateral meristems

(d)Development of flowers and fruits

Comment

Answer is: C

713.

Hydroponics is concerned with

(a)The conservation of water technique

(b)Growing plants without soil

(c)Growing plants without water but with atmospheric moisture

(d)The treatment of water with sound

Comment

Answer is: B

714.

Which of the following plant harmones controls fruit ripening?

(a)Gibberellic acid

(b)Auxins

(c)Ethylene

(d)Zeatin

Comment

Answer is: C

715.

An observer claimed in the late 17th century that he could see inside the human spermatozoon a miniature figure of man-a "humunculus'--which would grow into a full-sized man in due course of time. This was referred to as the theory of

(a)Pangenesis

(b)Preformation

(c)Heredity

(d)Epigenesis

Comment

Answer is: B

716.

A person who is associated with undue and extreme suspicion and a progressive tendency to regard the whole world in a framework of delusions if a victim of

(a)Psychoneurosis

(b)Manic psychosis

(c)Paranoia

(d)None of these

Comment

Answer is: C

717.

The National Bureau of Plant Genetic Resources is located at

(a)Jammu

(b)Shillong

(c)Bangalore

(d)New Delhi

Comment

Answer is: D

718.

Which one of the following scientists is known as the father of modern genetics ?

(a)Hargobind Khorana

(b)T.H. Morgan

(c)Charles Darwin

(d)Gregor Mendel

Comment

Answer is: D

719.

Genes control heredity in man and other organisms. This gene is

(a)A protein molecule

(b)A segment of RNA

(c)A segment of RNA or DNA

(d)A bead-like structure on the chromosomes

Comment

Answer is: C

720.

Organisms which have similar external appearance with reference to a particular character are called ?

(a)Homologous

(b)Analogous

(c)Phenotypes

(d)Phenocopies

Comment

Answer is: C

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Biology - Questions and AnswersPage 72

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