Neoteny refers to

• development of gonads

• moulting

• metamorphosis

• retention of larval traits in the adult body

Select the correct statements from the following regarding asexual reproduction.

I. It is slower than sexual reproduction.

II. It involve a single parent.

III. It produces progeny that are genetically identical with the parent.

IV. Clones are the progeny of asexual reproduction

• I, II, III, IV

• I, II, IV

• I, II, III

• II, III, IV

Multiplication of genetically identical copies of a cultiver by asexual reproduction is known as

• aclonal propagation

• clonal propagation

• vegetative propagation

• polyclonal propagation

How many ovum are developed in ovary of Hydra?

• Two

• Many

• One

• Three

Gametes formation in animals is found in

• ovaries

• gonads

• gall bladder

• testes

Hydra is

• herbivorous

• more developed

• carnivorous

• omnivorous

In rabbit, head of epididymis present at the head of the testis is called

• vas deferens

• cauda epididymis

• gubernaculum

• caput epididymis

The most primitive cell like chemical aggregates capable of growth and division were

• chemoautotrophs

• eobionts

• prokaryotes

• microspheres

129.

Assertion : In bacteria, photosynthesis occurs by utilizing wavelengths longer than 700 nm.

Reason : Here the reaction centre is B-890.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both the assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both the assertion and reason are false.

In prokaryotes, genetic recombination can occur during

• transduction

• transformation

• conjugation

• all of these