Endoparasites are found inside the host | Class 11 Biology Chapter Animal Kingdom, Animal Kingdom NCERT Solutions

Define a taxon. Give some examples of taxa at different hierarchical levels.

What are the steps involved in formation of a root nodule?

Nitrogen fixation is shown by prokaryotes and not by eukaryotes. Comment.

The plant cell cytoplasm is surrounded by both cell wall and cell membrane. The specificity of transport of substances are mostly across the cell membrane, because _________________.
 

What is the function ascribed to Eustachian tube?

The common name of pea is simpler than its botanical (scientific) name Pisum sativum. Why then is the simpler common name not used instead of the complex scientific/ botanical name in biology?

A plant species shows several morphological variations in response to altitudinal gradient. When grown under similar conditions of growth, the morphological variations disappear and all the variants have common morphology. What are these variants called?

At what stage of cell cycle does DNA synthesis take place?
 

Mention the ploidy of the following:

protonemal cell of a moss;

primary endosperm nucleus in dicot,

leaf cell of a moss;

prothallus cell of a fern;

gemma cell in Marchantia;

meristem cell of monocot,

ovum of a liverwort, and

zygote of a fern.