How many phyla are there in Animal Kingdom?

Statement I: The binary fission of Euglena is called homothetogenic fission because the daughter euglenae are like mirror images.
Statement II: Binary fission in Paramecium is known as perkinetal fission because it occurs at right angles to the kineties.

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$

In kingdom Plantae, alternation of generation is not associated with

Which of the following features correctly belong to the concerned plant group?

(a) Presence of heterospory also.

(b) Sporophyte is not independent, but it is attached to photosynthetic gametophyte.

(c) Endosperm is haploid and develops before fertilization.