Assertion : Algae and fish produce a large number of gametes.
Reason : Algae and fish show internal fertilisation.

Assertion: Algae and fungi are grouped in thallophyta. Reason: Algae and fungi show no differentiation in thallus.

Why do gametes are produced in large numbers in organisms exhibit external fertilisation ?

Animals exhibiting external fertilisation produce a large number of gametes. Pick the appropriate reason from the following

Assertion: In an organism, male gametes are always produced in large number as compared to female gametes. Reason: Male gametes have to cover a reasonable distance to reach the female gametes.

Assertion :- Dog fish and Whale are example of Homology. Reason : Ancestors of Dog fish and Whale were terrestrial.

Assertion: During gamete transport through water (in algae, bryophytes and pteridophytes), a large number of male gametes, fail to reach the female gametes. Reason: To compensate this loss of male gametes during transport, the number of female gametes produced is several thousand times the number of male gametes produed.

The following group of algae shows post fertilisation changes

Assertion. Most of the red algae are marine. Reason. Red algae contain red pigment anthocyanin.

Assertion : Algae were grouped as a separate kingdome by Whittaker. Reason : There are red , blue and green algae only.