External fertilisation

A few statements with regard to sexual reprodction are given below. (i) Sexual reproduction does not always require two individuals. (ii) Sexual reproduction generally involves gametic fusion. (iii) Meiosis never occurs during sexual reproduction. (iv) External fertilisation is a rule during sexual reproduction. Choose the correct statements from the option below.

A few statements with regard to sexual reprodction are given below. (i) Sexual reproduction does not always require two individuals. (ii) Sexual reproduction generally involves gametic fusion. (iii) Meiosis never occurs during sexual reproduction. (iv) External fertilisation is a rule during sexual reproduction. Choose the correct statements from the option below.

A few statements with regard to sexual reprodction are given below. (i) Sexual reproduction does not always require two individuals. (ii) Sexual reproduction generally involves gametic fusion. (iii) Meiosis never occurs during sexual reproduction. (iv) External fertilisation is a rule during sexual reproduction. Choose the correct statements from the option below.

Assertion: Syngamy occurs in the external medium, i.e. the outside of the body of the organism is called external fertilisation. Reason: Syngamy occurs inside the body of organism is called internal fertilisation.

Assertion: Syngamy occurs in the external medium, i.e. the outside of the body of the organism is called external fertilisation. Reason: Syngamy occurs inside the body of organism is called internal fertilisation.

Read the following four statements ( I - IV ) : I. In birds , the skin is dry without any glands except the preen glands which are modified sudorific glands . II. All mammals exclusively respire by using lungs , except dolphins. III. Chameleon is a tree lizard with a prehensile tall and independently movable eyes. IV. Amphibia is the only tetrapod vertebrate which has external fertilisation with no larval stage in their life cycle . How many statements is / are correct form the above ?

Given below are a few statements related to exgternal fertilisation. Choose the correct statements. (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 in a majority of organisms exhibiting external fertilisation. (iv) Offspring formed as a result of external fertilisation have better chance of survival than thos formed inside an organism.

Give any four differences between external and internal fertilisation?