Which plant tissue is responsible for transport of organic nutrients? MCQ with Answer and Explanation

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Which plant tissue is responsible for transport of organic nutrients?

A. Collenchyma

B. Epidermis

C. Xylem

D. Phloem

Answer: Option D

Solution (By JKSSB Mock Tests)

Phloem transports organic solutes (mainly sucrose) from source to sink. Xylem transports water and minerals. Phloem is composed of sieve tubes and companion cells.

This question belongs to: Science Biology

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Question #1

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Consider the following statements about the pancreas:
1. It has both endocrine and exocrine functions.
2. Alpha cells secrete insulin.
3. Beta cells secrete glucagon.
Which of the above is/are correct?

A. 3 only

B. 2 and 3

C. 2 only

D. 1 only

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Correct Answer: Option D

Explanation:
The pancreas is a mixed gland (1). Alpha cells secrete glucagon, beta cells insulin. Thus, 2 and 3 are swapped and incorrect.

This question belongs to: Science Biology

Question #2

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Which of the following statements about hormones is correct?

A. ADH is synthesized in the hypothalamus and released from the posterior pituitary.

B. Growth hormone is secreted by the posterior pituitary.

C. Oxytocin is produced by the anterior pituitary.

D. Prolactin stimulates uterine contractions.

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Correct Answer: Option A

Explanation:
ADH and oxytocin are synthesized in the hypothalamus and stored/released from the posterior pituitary. Growth hormone and prolactin are anterior pituitary hormones.

This question belongs to: Science Biology