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Explanation:
11) Two slogans that can popularize the organ donation are: “Soul goes to heaven organs don't.” “If you don't make it to the finish line, somebody can with your donated organs.”
12)The potted plant which is kept near the window in the room will grows towards light. Auxins help the plant stem bend towards light. More auxin collects on the light illuminated side of the stem. So cells on that side grow faster, on opposite side cells grow slow to make the stem bend
13) The diameter of efferent arteriole is less than that of the afferent arteriole because pressure builds up in the arteriole and some of the fluid is forced to go through the gaps in cells of Bowman's capsule (podocytes). This filters the blood, and this process is called ultrafiltration.
14) Gyri and sulci are the elevations and depressions present in the cerebral cortex. ... The gyri and sulci hold an important function in the body, which is to increase the surface area of the brain. This further helps in increasing the information processing.
Answer:
11. Two slogans that can popularize the organ donation are: “Soul goes to eaven organs don't.” “If you don't make it to the finish line, somebody can with your donated organs.”
12. I. The potted plant which is kept near the window in the room,grows towards light.
II. Auxins acts on bending of stem of show a response to the sunlight.
III. More auxin collects on the light illuminated side of the stem.So cells on that side grow faster,on opposite side cells grow slow to make the stem bend.
IV. Auxins are the plant harmone responsible for the growing of the stem towards light.Auxins are synthesized at the tip of the stem.
V. Bending of the plant towards light is called phototropism, by the action of auxin.
13. The diameter of efferent arteriole is less than that of the afferent arteriole because pressure builds up in the arteriole and some of the fluid is forced to go through the gaps in cells of Bowman's capsule (podocytes). This filters the blood, and this process is called ultrafiltration.
14. They are called gyri and sulci . They increases the surface area of the brain, and hence allow easy exchange of nutrients and gases through blood vessels. They also house more number of neurons than a round brain can have.
15. I. Head
II. Middle Piece
III. Tail
It is a cap-like structure present in the anterior part of the head of the sperm. It contains hyaluronidase enzyme, which hydrolyses the outer membrane of the egg, thereby helping the sperm to penetrate the egg at the time of fertilization.
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