MCQ
Ethylen gas is used for
  • A
    growth of plants
  • B
    delaying fruit's abscission
  • ripening of fruits
  • D
    stopping the leaf abscission

Answer

Correct option: C.
ripening of fruits
c

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Proteins which catalyse biochemical reactions in the living world are known as
Proteinous part in enzyme is
Choose correct sentences.

$1.$ meiosis is important process for evolution.

$2.$ in meiosis $-II$ mother cell is haploid.

$3.$ In anaphase $-II$ homologous chromosomes are differentiate.

$4.$ after meiosis, each daughter cell has same $DNA$ strands.

Ray florets of sunflower $(Compositae)$ are
Match the column
Substrate Enzyme
$(A)$ Ribonucleotide $(i)$ Chitinase
$(B)$ Chitin $(ii)$ Cellulase
$(C)$ Cellulose $(iii)$ Ribonuclease
The main plant body of Selaginella sp. is
Mode of nutrition in Rhizopus is
Passage cells are present in
Mark the given statements True (T) or False (F).
(i) In majority of the dicotyledonous plants, the direct elongation of the radical leads to the formation of secondary root which grows inside the soil.
(ii) In monocotyledonous plants, the primary root is short lived and is replaced by a large number of roots.
(iii) In some plants like grass, Monstera and banyan tree, roots arises from parts of the plant other than the radical and are called adventitious roots.
(iv) Roots hairs are present in region of elongation.
(v) The zone proximal to region of elongation is called the region of maturation.
(vi) Tap roots of carrot, turnip and adventitious roots of sweet potato, get swollen and store food.
(vii) Hanging structure that support a banyan tree are called stilt roots.
(viii) The stems of maize and sugarcane have supporting roots coming out of the upper nodes of the stem are called stilt roots.
(ix) In some plants such as Rhizophora growing in swampy areas, many roots come out of the ground and grow vertically upwards. Such roots are called pneumatophores and help to get oxygen for respiration.
(x) The regions of the stem where leaves are born are called nodes.
(xi) Underground stems of Zaminkand, Colocasia are modified to store food in them.
(xii) Tendrils which develop from axillary buds, are slender and spirally coiled and help plants to climb.
(xiii) A lateral branch with short internodes and each node bearing a rosette of leaves and a tuft of roots is found in terrestial plants like pistia and eichhornia.
(xiv) Leaves originate from shoot apical meristems and are arranged in an acropetal order.
(xv) A typical leaf consists of three main parts: leaf base, petiole and lamina
Choose the correct option given below :-
Agarose is extracted from