The Reproductive System — Biology STD 10 — Question

Sketch and label the structure of adrenal gland.

Place the words at the bottom of the page next to the number that shows the location of the Endocrine Glands.
(1) ________
(2) ________
(3) ________
(4) ________
(5) ________
(6) ________
(7) ________
(8) ________
(9) ________
Pancreas Hypothalamus Pituitary Parathyroid Ovaries Adrenal Thyroid Thymus Testes

In a certain species of animals, black fur (B) is dominant over brown fur (b) Predict the genotype and phenotype of the offspring when both parents are ‘Bb’ or have heterozygous
black fur .

Differentiate between:
Open circulatory system and Closed circulatory system.

Complete the following table by filling in the blanks numbers 1 to 7?

Gland	Hormone secreted	Effect on body
(1) ……….	(2) ……….	Regulates basal metabolism
Pancreas ("beta" cells)	(3) ……….	Controls blood sugar level
(4) ……….	(5) ……….	Increases heart beat
(6) ……….	Thyroid stimulating hormone	(7) ……….

Draw a neat diagram of the stomatal apparatus found in the epidermis of leaves and label the Stoma, Guard cells, Chloroplast, Epidermal cells, Cell wall and Nucleus.

Mention four disadvantages of transpiration to the plant.

The below diagram represents the human brain as seen in an external view. Study the same and then answer the questions that follow:

(i) Name the parts labeled 1, 2, 3, and 4.
(ii) Mention the difference in the arrangement of the nerve cells in the parts marked ‘1’ and ‘4’.
(iii) What is the main function of the parts marked ‘3’ and ‘4’?
(iv) Name the sheet of nerve fibers that connect the two halves of the part labeled ‘1’.

What are the advantages of having a nervous system?