MCQ
Choose correct one:
  • The nature and properties of soil in different places vary
  • B
    Only grain size of soil particles determine the percolation and water holding capacity of the soils
  • C
    In the aquatic environment the sediment characteristics do not determine the type of benthic animals that can thrive there
  • D
    Types of animals dictates the vegetation in any area

Answer

Correct option: A.
The nature and properties of soil in different places vary
a

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

Enzymes are destroyed
The major characteristics of the vegetation of a locality are controlled by
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 :-
Assertion: Splitting of the water molecule takes place on the inner side of the thylakoid membrane.
Reason: Protons or hydrogen ions that are produced by the splitting of water accumulate within the lumen of the thylakoids.
Agarose is extracted from
$A :$ Members of a species are reproductively isolated from the members of other species.
$R :$ Species is the basic taxonomic category.
Dermatogen, periblem and plerome are
Choose wrong statement for Abscisic acid (ABA) :
(i) It acts as a general plant growth inhibitor and an inhibitor of plant metabolism.
(ii) ABA inhibits seed germination.
(iii) ABA stimulates the closure of stomata
(iv) Increases the tolerance of plants to various kinds of stresses. Therefore, it is also called the stress hormone.
(v) ABA plays an important role in seed dormancy,
(vi) In most situations, ABA acts as an antagonist to GAs
Pneumatophores have lenticels for
Choose the correct statement