A vessel element is one of the cell types found in xylem, the water conducting tissue of plants. Vessel elements are typically found in the angiosperms but absent from most gymnosperms such as the conifers.

Correct Option: A

A vessel element is one of the cell types found in xylem, the water conducting tissue of plants. Vessel elements are typically found in the angiosperms but absent from most gymnosperms such as the conifers.

Paramecium is a ciliated protozoan because of the presence of thousands of cilia. Plasmodium (malarial parasite) is a sporozoan, causing malaria which has staggering effect on human population.

Correct Option: D

Paramecium is a ciliated protozoan because of the presence of thousands of cilia. Plasmodium (malarial parasite) is a sporozoan, causing malaria which has staggering effect on human population.

allopatric species

Correct Option: A

allopatric species

Karyotaxonomy is based up on nucleus and band on chromosomes.

Correct Option: B

Karyotaxonomy is based up on nucleus and band on chromosomes.

In many bacteria (specially gram +ve) the plasma membrane gives rise to infoldings called mesosome. They have respiratory enzymes like succinic dehydrogenase, cytochrome oxidase for respiration.

Correct Option: C

In many bacteria (specially gram +ve) the plasma membrane gives rise to infoldings called mesosome. They have respiratory enzymes like succinic dehydrogenase, cytochrome oxidase for respiration.