Root hair have their origin from
Endodermis
Pericycle
Cortex
Epidermis
Xylem
Correct answer is D
Asymmetric cell division in an epidermal cell gives rise to a large cell (atrichoblast) that develops into a hairless epidermal cell and a shorter 'specialized' cell that forms a root hair (trichoblast).
trap all the sunlight
trap a small percent of the sun energy
are primary producers
are eaten by primary consumers
contains chlorophyll
Correct answer is A
No explanation has been provided for this answer.
grasses
grasshopper
lizards
snakes
hawks
Correct answer is E
No explanation has been provided for this answer.
The major function of contractile vacuole in amoeba is?
to secrete enzyme to digest food particles
to store excess food materials
to excrete nitrogenous waste
to absorb water from the surrounding
to collect and expel water in the cytoplasm
Correct answer is E
- The contractile vacuole (CV) complex is an osmoregulatory organelle of free-living amoebae and protozoa, which controls the intracellular water balance by accumulating and expelling excess water out of the cell, allowing cells to survive under hypotonic stress as in pond water.
- This implies that the contractile vacuole, as its name suggests, expels water out of the cell by contracting.
The one-seeded fuit in which the pericarp and the seed coat have become fused together is known as
achene
samara
caryopsis
legume
drupe
Correct answer is C
No explanation has been provided for this answer.