Animal Kingdom — BIOLOGY STD 11 Science — Question

Give the technical term for the following:

1. The forewings/ mesothoracic wings.
2. The jointed, filamentous structure found in the tenth abdominal segment of both male and female cockroaches.

Division of chromosomes takes place during which stage of mitosis?

It is said that the one cycle of cell division in human cells (eukaryotic cells) takes 24 hours. Which phase of the cycle, do you think occupies the maximum part of cell cycle?

The three tiny bones present in middle ear are called ear ossicles. Write them in correct sequence begining from ear drum.

What name is given to the storage bodies of green algae? Where are they located in the cells?

What is the number of chromosomes in the cells of endometrium?

Define mixotrophic nutrition.

What type of animals are terrestrial snails on the basis of excretion?

Name the groups of growth regulating plant hormones, which stimulate the following.

1. Cell division even in non-meristematic tissues.
2. Elongation of stem and expansion of leaves.

Bolting, elongation of internodes, closure of stomata, malting process in breweries.