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External Fertilization

In hemichorda...

Question

In hemichordates

A

sexes are separate.

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B

Sexes are united.

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C

Fertilization is internal.

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D

Development is direct.

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Solution

The correct option is A sexes are separate.
Fertilization is external.

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Similar questions

Q. Given below are four statements regarding external fertilization.

(i) The male and female gametes are formed and released simultaneously.
(ii) Only a few gametes are released into the medium.
(iii) Water is the medium of fertilization. It provides better chances of survival of gametes than internal fertilization.
(iv) Offspring which develop from external fertilization has better chances of survival than those developed from internal fertilization.

Which of the given statements are correct?

Q. Read the statements regarding echinoderms and choose the correct option
(i) All are marine with organ system level of organization
(ii) Adults are bilaterally symmetrical
(iii) They are dioecious
(iv) Fertilization is internal and indirect development is observed
(v) Triploblastic and acoelomate animals

Q. The statements given below shows some characteristics of a phylum. identify it.
(i) Tissue absent
(ii) Internal fertilisation
(iii) Development is indirect
(iv) Spongocoelate with ostia (many) and single osculum and canal system
(v) Sexes are hermaphrodite.

Q. Question 8
Aquatic animals in which fertilization occurs in water are said to be:

(a) viviparous without fertilization.
(b) oviparous with external fertilization.
(c) viviparous with internal fertilization
(d) oviparous with internal fertilization.

Match the following

Column-I Column-II

A. Fishes and amphibians 1. Fertilization is internal and development is external

B. Reptiles and birds 2. Both fertilisation and development is internal

C. Mammals 3. Both fertilisation and development is external

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