Question 12 Marks
Write the name of indicated part in diagram: Human jaw
Answer
View full question & answer→Part indicated in the diagram: Wisdom teeth
Questions
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Question 22 Marks
Complete the following diagram:
Question 32 Marks
Complete the following chart.
Question 42 Marks
Define vestigial organs. Write any two names of vestigial organs in human body.
Answer
View full question & answer→i. Vestigial organs are degenerated or underdeveloped useless organs of organisms.
ii. Appendix, muscle of the car pinna, tail-bone (coccyx), body hairs, nictitating membrane (third eyelid) and wisdom tooth are the vestigial organs in human body.
ii. Appendix, muscle of the car pinna, tail-bone (coccyx), body hairs, nictitating membrane (third eyelid) and wisdom tooth are the vestigial organs in human body.
Question 52 Marks
Explain Darwin's theory of natural selection.
Answer
View full question & answer→i. Darwin's theory of natural selection is based on the concept of survival of the fittest.
ii. Organisms can reproduce prolifically.
iii. Under limited resources, organisms compete with each other in a life-threatening manner for their survival.
iv. According to this theory, only those organisms survive which show modifications for winning the competition. The selected organisms then give rise to new species with their specific set of characters.
ii. Organisms can reproduce prolifically.
iii. Under limited resources, organisms compete with each other in a life-threatening manner for their survival.
iv. According to this theory, only those organisms survive which show modifications for winning the competition. The selected organisms then give rise to new species with their specific set of characters.