Genetics — Biology STD 10 — Question

Name the Following :
The chemical substances released by the plants that help in creating responses to stimuli.

Rearrange the following in correct sequence pertaining to what is given within bracket at the end.
repolarization……. Depolarization…….. Resting….. (polarised) (during conduction of nerve impulse through a nerve fibre)

Name the organ in which guard cells are located and mention their main functions.

A potted plant was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours. One of the leaves was covered with black paper in the centre. The potted plant was then placed in sunlight for a few hours.

During the starch test, why was the leaf

(1) boiled in water

(2) boiled in methylated spirit

Name the Following
Number of chambers present in the human heart.

Name the following:
Loss of water as droplets through leaves of an intact plant.

Give Technical Term:
The part of the central nervous system in which the gray matter is located on the outer side and the white matter on the inner side.

What are the age restrictions for marriages by law for boys and girls in India?

Give Technical Term:
The phase in the menstrual cycle in which the remnant of a follicle in the ovary turns to corpus luteum.

Give the Technical Term: Name the hormone which maintains glucose level in the blood.