Stem and Stem modifications- Practice Test 1

Answer: Option A

Explanation

Stem is the vertically growing axis of the shoot system. It is positively phototropic and negatively geotropic in growth.

Answer: Option B

Explanation

First bud of the Plant is Plumule. It is usually situated at the apex of the hypocotyl and it consists of leaves and an epicotyl.

Answer: Option D

Explanation

Branches have exogenous origin. They develop both horizontally and obliquely on stem.

Answer: Option C

Explanation

Cyperus has triangular shaped stem, The stem of Cucurbita is Ridged. The stem of Hibiscus is Cylindrical and Leucas stem Quadrangular in shape.

Hence, option is C is correct.

Answer: Option D

Explanation

Linear growth of stem is due to the activity of Terminal bud