Explain, why a haemodialysing unit calle | Class 11 Biology Chapter Excretory products and their Elimination, Excretory products and their Elimination 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?

Discuss mechanisms of absorption.

Mitosis results in producing two cells which are similar to each other. What would be the consequence if each of the following irregularities
occur during mitosis?
a. Nuclear membrane fails to disintegrate
b. Duplication of DNA does not occur
c. Centromeres do not divide
d. Cytokinesis does not occur.

With the help of a schematic diagram describe the haplo-diplontic life cycle pattern of a plant group.

Differentiate between
a. Inspiratory and expiratory reserve volume
b. Vital capacity and total lung capacity
c. Emphysema and occupational respiratory disorder

The heterosporous pteridophytes show certain characteristics, which are precursor to the seed habit in gymnosperms. Explain.

Smaller, lipid soluble molecules diffuse faster through cell membrane, but the movement of hydrophilic substances are facilitated by certain transporters which are chemically ____________.
 

A typical angiosperm flower consists of four floral parts. Give the names of the floral parts and their arrangements sequentially.

Correct the statements
a. Cells shrink in hypotonic solutions and swell in hypertonic solutions.
b. Imbibition is a special type of diffusion when water is absorbed by living cells.
c. Most of the water flow in the roots occurs via the symplast.