Natural parthenogenesis occur in

A.Housefly

B.Drosophila

C.Honey bee

D.All

Which of the following structure represents vital link between two successive generations?

1. Spore mother cell

2. Zygote

3. Antheridium

4. Zygophore

In which of the following, gametes are released in the surrounding medium

A.Fishes

B.Amphibians

C.Earthworm

D.Both A and B

Read the following statements
Statement A : Reproduction enables continuity of the species, generation after generation

Statement B : Zygote is the vital link that ensures continuity of species between organisms of one generation and the next.

Choose the correct option.

(1) Both the statements are incorrect

(2) Only statement A is correct

(3) Only statement B is correct

(4) Both the statements are correct

Select the-correct sequence from the following:

(1) Gametogenesis → Syngamy → Zygote → Embryogenesis

(2) Gametogenesis → Syngamy → Embryogenesis → Zygote

(3) Zygote → Embryogenesis → Gametogenesis

(4) Syngamy → Gametogenesis → Zygote → Embryogenesis

__________ is formed just after fertilization.

A.Morula

B.Blastula

C.Zygote

D.Foetus

The most vital event of sexual reproduction is

1. Fusion of gametes

2. Gamete formation

3. Gamete transfer

4. Release of gametes

Development of a new individual from a single gamete without fusion with another gamete is called

1. Parthenocarpy

2. Sporophytic budding

3. Parthenogenesis

4. Polyembryony

Embryogenesis refers to the process of development of an embryo from the zygote. During embryogenesis in humans, zygote undergoes

1. Mitosis

2. Cell differentiation 

3. Meiosis

4. Both 1 & 2

Reptiles and birds are:

(1) Oviparous

(2) Viviparous

(3) Ovoviviparous

(4) Viviparous and oviparous respectively