Principles of Genetics — Biology STD 10 — Question

Name the following:
The neobrain.

Given below is an example of a certain structure and its special functional activity:
Chloroplasts and Photosynthesis.
In a similar way, write the functional activity against each of the following:
Hydathodes and ……………………….

Name the Following :
The structures through which guttation occurs.

Name the following:
The process by which raisins swell up when placed in a beaker of water.

Select the odd one in the following:
RBC, WBC, Blood platelets, Histone.

Name the following:
Organ which produces urea.

Give one example of a conditioned reflex in your own life.

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 :
The valve present between the chambers on the right side of the human heart.