Q: What novelties can also arise when structures that originally played one role gradually acquire a different one? Choices: - mutation - interactions - reproduction - evolutionary A:
evolutionary

(Question)
Q: How many large eggs are generated during oogenesis? Choices: - 3 - 2 - 4 - one A:
(Answer)
one

Ques: Q: What is the leading cause of lung cancer? Choices: - chewing tobacco - heredity - tuberculosis - tobacco smoke A:
Ans: tobacco smoke

(Q).
Q: What is a primary source of the hormone melatonin? Choices: - thymus - pituitary gland - thyroid gland - pineal gland A:
(A).
pineal gland

Ques:Q: What does hemoglobin in blood carry to the cells? Choices: - methane - carbon dioxide - nitrogen - oxygen A:

Ans:oxygen

Q: What gland is located at the base of the brain and secretes the hormone melatonin? Choices: - thymus - pituitary - thyroid - pineal A:
pineal