Biology

Define the following terms:

(a) Phytohormones

(b) Tropism

(c) Clinostat

(d) Apical dominance

(e) Parthenocarpy

(f) Abscission

(g) Heliotropism

Chemical Coordination in Plants

178 Likes

Answer

(a) Phytohormones — Phytohormones or plant hormones are naturally occurring small organic molecules.

(b) Tropism — Response or orientation of a plant to certain stimulus that acts with greater intensity from one direction to another is called tropism.

(c) Clinostat — Clinostat is a mechanical device that rotates at a slow speed to demonstrate geotropism.

(d) Apical dominance — The phenomenon of the suppression of growth of lateral buds by apical buds is called apical dominance.

(e) Parthenocarpy — Development of fruits without fertilisation is called parthenocarpy.

(f) Abscission — Abscission is the shedding of various parts of a plant such as leaves, buds, flowers and fruits.

(g) Heliotropism — The phenomenon in which the young flower heads follow the sun across the sky as it moves from east to west direction is called heliotropism.

Answered By

128 Likes


Related Questions