PART - 2 - Unit V : CH - 17 Locomotion and Movement — BIOLOGY STD 11 Science — Question

Name the hormone that regulates each of the following and mention the source gland of each of them:

1. Maturation of ovarian follicle.
2. Secretion of androgens by testes.
3. Increase the rate of heart beat.
4. Water and electrolyte balance in the body.
5. Release of bile from gall bladder.

Define biodiversity.

Fill in the blanks:

Hormones	Target gland
Thyrotrophin (TSH)	__________________.

Development in cockroach is described as paurometabolous. What is meant by this?

Which auxin is used to destroy dicotyledon weeds?

While explaining the internal structure in plants stem, teacher makes a statement about various arrangement of vascular bundles in plants. After lecture, Arun asked about the reason and significance of such arrangements

1. What functions they perform in plants?
2. What values Arun has, as science student?

Mention the stages of cardiac cycle.

Write the name of the specialised cell of bone marrow responsible for the formation of platelets.

How do mosses prevent soil erosion?

Approximately how many millilitres of air can a healthy human being inhale/exhale per minute?