Samacheer Kalvi Class 11 Plant Growth & Development Question - 1

Question: 1

Differentiated cells, after multiplication again lose the ability to divide and mature to perform specific functions. This is called

(A) Redifferentiation

(B) Plasticity

(C) Differentiation

(D) Dedifferentiation

Question: 2

Some of the polyamines are known to behave like

(A) Plant hormones

(B) Growth inhibitors

(C) Flowering inhibitors

(D) Fruit ripening agent

Question: 3

The term Phytochrome was coined by

(A) Butler

(B) Skoog

(C) T.D.Lysenko

(D) Garner

Question: 4

The term kinetin was coined by

(A) Skoog

(B) Kurosawa

(C) Haber landt

(D) Went

Question: 5

Which of the hormone is known as stress hormone?

(A) ABA

(B) Auxin

(C) Kinetin

(D) Gibberellin

Question: 6

Which one of the following is Agent orange?

(A) Weddicide with Dioxin

(B) Biodegradable insecticide

(C) Colour used in a fluorescent lamp

(D) Chemical used in luminous paint