Root hairs develop from the region of : (1) Elongation (2) root cap (3) Meristematic activity (4) Maturation

Root hairs develop from the region of : (1) Elongation (2) root cap (3) Meristematic activity (4) Maturation
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(4) Maturation
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Root hair develop from the region of (a) elongation (b) root cap (c) meristematic activity (d) maturation.

Description : Root hair develop from the region of (a) elongation (b) root cap (c) meristematic activity (d) maturation.

Last Answer : (d) maturation.

Plants absorb most of the water needed by them through their (a) Embryonic zone (b) Growing point (c) Root hairs (d) Zone of elongation

Description : Plants absorb most of the water needed by them through their (a) Embryonic zone (b) Growing point (c) Root hairs (d) Zone of elongation

Last Answer : Ans:(c)

Organisation of stem apex into corpus and tunica is determined mainly by (a) planes of cell division (b) regions of meristematic activity (c) rate of cell growth (d) rate of shoot tip growth.

Description : Organisation of stem apex into corpus and tunica is determined mainly by (a) planes of cell division (b) regions of meristematic activity (c) rate of cell growth (d) rate of shoot tip growth.

Last Answer : (a) planes of cell division

Organisation of stem apex into corpus and tunica is determined mainly by (a) planes of cell division (b) regions of meristematic activity (c) rate of cell growth (d) rate of shoot tip growth.

Description : Organisation of stem apex into corpus and tunica is determined mainly by (a) planes of cell division (b) regions of meristematic activity (c) rate of cell growth (d) rate of shoot tip growth.

Last Answer : (a) planes of cell division

Explain meristematic zone of a root. -Biology

Description : Explain meristematic zone of a root. -Biology

Last Answer : answer:

Structural characteristics of meristematic cells near root tip. -Biology

Description : Structural characteristics of meristematic cells near root tip. -Biology

Last Answer : answer:

Why do roots have root hairs? -Biology

Description : Why do roots have root hairs? -Biology

Last Answer : answer:

Water will be absorbed by root hairs, then how is when the external medium? -General Knowledge

Description : Water will be absorbed by root hairs, then how is when the external medium? -General Knowledge

Last Answer : The answer is 'Hypotonic'

Water will be absorbed by root hairs, then how is when the external medium? -General Knowledge

Description : Water will be absorbed by root hairs, then how is when the external medium? -General Knowledge

Last Answer : answer:

Water will be absorbed by root hairs, then how is when the external medium? -General Knowledge

Description : Water will be absorbed by root hairs, then how is when the external medium? -General Knowledge

Last Answer : answer:

How do plants absorb water through root hairs ?

Description : How do plants absorb water through root hairs ?

Last Answer : Answer : Plants absorb water through unicellular root hairs.

Root hairs absorb water from soil due to

Description : Root hairs absorb water from soil due to

Last Answer : Root hairs absorb water from soil due to A. Osmotic pressure B. Atmospheric pressure C. Turgor pressure D. Suciton pressure

The growth of seedling plants after transplantation will not always be proper because (a) New soil may not contain the required minerals (b) During transplantation root hairs get damaged (c) Roots cannot penetrate deep into the soil (d) Of all factors stated above

Description : The growth of seedling plants after transplantation will not always be proper because (a) New soil may not contain the required minerals (b) During transplantation root hairs get damaged (c) Roots cannot penetrate deep into the soil (d) Of all factors stated above

Last Answer : Ans:(d)

Root Hairs arise from - (1) Cortex (2) Pericycle (3) Epidermis (4) Endodermis

Description : Root Hairs arise from - (1) Cortex (2) Pericycle (3) Epidermis (4) Endodermis

Last Answer : (3) Epidermis Explanation: Root hairs are tubular-shaped tipgrowing cells that arise from epidermal cells known as trichoblasts, behind the tips of young roots. Like all tip-growing cells, root ... the addition of cell wall precursors to the tip delivered by vesicles from the endomembrane system.

In plants water is absorbed by the root hairs by a process called: (1) Transpiration (2) Respiration (3) Perspiration (4) Osmosis

Description : In plants water is absorbed by the root hairs by a process called: (1) Transpiration (2) Respiration (3) Perspiration (4) Osmosis

Last Answer : (4) Osmosis Explanation: Plants absorb water from their root hairs on the root via osmosis. It is then transported to other parts of the plant. (through the network of xylem vessels) through a combination of capillary action and "transiprational pull".

Water from soil enters into the root hairs owing to : (1) Atmospheric pressure (2) Capillary pressure (3) Root pressure (4) Osmotic pressure

Description : Water from soil enters into the root hairs owing to : (1) Atmospheric pressure (2) Capillary pressure (3) Root pressure (4) Osmotic pressure

Last Answer : (2) Capillary pressure Explanation: In plants, the transpiration stream is the uninterrupted stream of water, and other, which is taken up by the roots and, via the xylem vessels, ... the difference in water potential between the soil and the substomatal cavity caused by transpiration.

Water will be absorbed by root hairs, then how is when the external medium?

Description : Water will be absorbed by root hairs, then how is when the external medium?

Last Answer : Hypotonic

Root Hairs arise from (1) Cortex (2) Pericycle (3) Epidermis (4) Endodermis

Description : Root Hairs arise from (1) Cortex (2) Pericycle (3) Epidermis (4) Endodermis

Last Answer : Epidermis

The only plant cells without nuclei among the following are : (1) Cambium cells (2) Root hairs (3) Companion cells (4) Tracheid cells

Description : The only plant cells without nuclei among the following are : (1) Cambium cells (2) Root hairs (3) Companion cells (4) Tracheid cells

Last Answer : Cambium cells

In plants water is absorbed by the root hairs by a process called: (1) Transpiration (2) Respiration (3) Perspiration (4) Osmosis

Description : In plants water is absorbed by the root hairs by a process called: (1) Transpiration (2) Respiration (3) Perspiration (4) Osmosis

Last Answer : Osmosis

Water from soil enters into the root hairs owing to : (1) Atmospheric pressure (2) Capillary pressure (3) Root pressure (4) Osmotic pressure

Description : Water from soil enters into the root hairs owing to : (1) Atmospheric pressure (2) Capillary pressure (3) Root pressure (4) Osmotic pressure

Last Answer : Capillary pressure

Peptidyl transferase activity is located in (A) Elongation factor (B) A charged tRNA molecule (C) Ribosomal protein (D) A soluble cytosolic protein

Description : Peptidyl transferase activity is located in (A) Elongation factor (B) A charged tRNA molecule (C) Ribosomal protein (D) A soluble cytosolic protein

Last Answer : Answer : C

Structural characteristics of the cells in the elongation zone of the root. -Biology

Description : Structural characteristics of the cells in the elongation zone of the root. -Biology

Last Answer : answer:

Which of the following control the root initiation, cell elongation and apical dominance? (A)Auxins (B) ABA (C) Gibberellins (D) Ethylene

Description : Which of the following control the root initiation, cell elongation and apical dominance? (A)Auxins (B) ABA (C) Gibberellins (D) Ethylene

Last Answer : (D) Ethylene

Which of the following control the root initiation, cell elongation and apical dominance? (A)Auxins (B) ABA (C) Gibberellins (D) Ethylene

Description : Which of the following control the root initiation, cell elongation and apical dominance? (A)Auxins (B) ABA (C) Gibberellins (D) Ethylene

Last Answer : (B) ABA

Gibberellins promote (a) seed germination (b) seed dormancy (c) leaf fall (d) root elongation.

Description : Gibberellins promote (a) seed germination (b) seed dormancy (c) leaf fall (d) root elongation.

Last Answer : (c) leaf fall

Abscisic acid causes (a) stomatal closure (b) stem elongation (c) leaf expansion (d) root elongation.

Description : Abscisic acid causes (a) stomatal closure (b) stem elongation (c) leaf expansion (d) root elongation.

Last Answer : (a) stomatal closure

ABA is involved in (a) shoot elongation (b) increased cell division (c) dormancy of seeds (d) root elongation.

Description : ABA is involved in (a) shoot elongation (b) increased cell division (c) dormancy of seeds (d) root elongation.

Last Answer : (d) root elongation.

Binding of RNA polymerase holoenzyme to the promoter region of lac operon is facilitated by (A) Catabolite gene activator protein (CAP) (B) cAMP (C) CAP-cAMP complex (D) None of these

Description : Binding of RNA polymerase holoenzyme to the promoter region of lac operon is facilitated by (A) Catabolite gene activator protein (CAP) (B) cAMP (C) CAP-cAMP complex (D) None of these

Last Answer : Answer : C

What is the function of the root cap? -Biology

Description : What is the function of the root cap? -Biology

Last Answer : answer:

Root cap is absent in

Description : Root cap is absent in

Last Answer : Root cap is absent in A. Lithophytes B. Xerophytes C. Hydrophytes D. Mesophytes

Root cap is absent in

Description : Root cap is absent in

Last Answer : Root cap is absent in A. Mesophytes B. Hydrophytes C. Epiphytes D. Xerophytes

Root cap is not found n: (a) Mesophytes (c) Hydrophytes (b) Xerophytes (d) Halophytes

Description : Root cap is not found n: (a) Mesophytes (c) Hydrophytes (b) Xerophytes (d) Halophytes

Last Answer : Ans. ((c))

Root cap is derived from – (1) Derm atogen (2) Calyptrogen (3) Protoderm (4) Histogen

Description : Root cap is derived from – (1) Derm atogen (2) Calyptrogen (3) Protoderm (4) Histogen

Last Answer : (2) Calyptrogen Explanation: Calyptrogen is a layer of rapidly dividing cells at the tip of a plant root, from which the root cap is formed. It occurs in grasses and many other plants. The ... outermost ones are dead, envelops and protects the growing tip very much as a thimble protects the finger.

What is the other name of root cap?

Description : What is the other name of root cap?

Last Answer : Calyptra

Tunica corpus theory is connected with (a) root apex (b) root cap (c) shoot apex (d) secondary growth.

Description : Tunica corpus theory is connected with (a) root apex (b) root cap (c) shoot apex (d) secondary growth.

Last Answer : (c) shoot apex

In roots, mitotically and metabolically inactive cells that are positioned just behind the root cap are called as

Description : In roots, mitotically and metabolically inactive cells that are positioned just behind the root cap are called as

Last Answer :  In roots, mitotically and metabolically inactive cells that are positioned just behind the root cap are called as – Quiescent center

Root cap is derived from (1) Dermatogen (2) Calyptrogen (3) Protoderm (4) Histogen

Description : Root cap is derived from (1) Dermatogen (2) Calyptrogen (3) Protoderm (4) Histogen

Last Answer : Calyptrogen

Function of meristematic tissues? -Biology

Description : Function of meristematic tissues? -Biology

Last Answer : answer:

What are meristematic tissues? -Biology

Description : What are meristematic tissues? -Biology

Last Answer : answer:

Characteristic features of meristematic tissues? -Biology

Description : Characteristic features of meristematic tissues? -Biology

Last Answer : answer:

Where are meristematic tissues located? -Biology

Description : Where are meristematic tissues located? -Biology

Last Answer : answer:

What is a meristematic cell ?

Description : What is a meristematic cell ?

Last Answer : Tissue cells in which cells are able to divide continuously are usually called meristematic cells.

$ Cellular totipotency means that single cell can give rise to a fully grown multicellular organisms ! Meristematic cells are also called "stem cells"

Description : $ Cellular totipotency means that single cell can give rise to a fully grown multicellular organisms ! Meristematic cells are also called "stem cells"

Last Answer : $ Cellular totipotency means that single cell can give rise to a fully grown multicellular organisms ! Meristematic ... D. If both As and R are wrong.

State the functions of meristematic tissues.

Description : State the functions of meristematic tissues.

Last Answer : a) Apical meristems make the plant to grow taller. b) Lateral meristems add girth to the plant body. c) Meristematic cells in vascular bundles of roots and stems bring about growth in thickness. d) The meristems found in nodes help in branching.

Mention the features of meristematic tissues.

Description : Mention the features of meristematic tissues.

Last Answer : a) The cells have thin walls. b) The cells divide actively and cause growth. c) The cells are closely arranged without any inter cellular spaces in between. d) The cells have a large nucleus but lacks chloroplasts

Mention the types of meristematic tissues & state their function

Description : Mention the types of meristematic tissues & state their function

Last Answer : a) Apical meristem: They are located at the shoot tip which makes the plant, grow taller. b) Lateral meristem: They add to girth (diameter) of the plant body.

Where do meristematic tissues occur?

Description : Where do meristematic tissues occur?

Last Answer : Meristematic tissues occur in all growing regions like root tip, stem apex and buds.

What are meristematic tissues?

Description : What are meristematic tissues?

Last Answer : The tissues composed of cells which keep on dividing forming new cells are called meristematic tissues.

Meristematic tissue responsible for increase in girth of tree trunk is (a) intercalary meristem (b) lateral meristem (c) phellogen (d) apical meristem.

Description : Meristematic tissue responsible for increase in girth of tree trunk is (a) intercalary meristem (b) lateral meristem (c) phellogen (d) apical meristem.

Last Answer : (b) lateral meristem