When tendrils come in contact with any support, the tip of the tendril in contact with the object does not grow as rapidly as the part of the tendril away from the object. this is due to the fast that auxin secreted in the tip diffuses towards the side opposite to the point of contact. So this inducRead more
When tendrils come in contact with any support, the tip of the tendril in contact with the object does not grow as rapidly as the part of the tendril away from the object. this is due to the fast that auxin secreted in the tip diffuses towards the side opposite to the point of contact. So this induces more growth on the side opposite to the point of contact. Thereby causing the tendril to circle around the object.
Plant hormones or phytohormones are chemicals which help to regulate growth, development, differentiation, flowering and other physiological processes with or without being translocated to other sites.
Plant hormones or phytohormones are chemicals which help to regulate growth, development, differentiation, flowering and other physiological processes with or without being translocated to other sites.
Reflex arc are formed in the spinal cord itself although the information also goes on to reach brain where the encounter remains in the memory and make us aware of our action. So there is no direct role of the brain in reflex action. Secondly there are certain reflex actions under the control of braRead more
Reflex arc are formed in the spinal cord itself although the information also goes on to reach brain where the encounter remains in the memory and make us aware of our action. So there is no direct role of the brain in reflex action. Secondly there are certain reflex actions under the control of brain known as cerebral reflex. Closure of eyes exposed to flash of light, salivation at sight or smell of food, peristalsis, inspiration and expiration are few examples of cerebral reflexes.
Smell of a agarbatti is initially detected by olfactory receptors located in our nose. They then send impulses to the olfactory centre in the forebrain.
Smell of a agarbatti is initially detected by olfactory receptors located in our nose. They then send impulses to the olfactory centre in the forebrain.
Reflex action is a nerve mediated, automatic involuntary response to a stimulus without consulting the will. It is controlled by spinal cord. it needs an instantaneous response to a stimulus where delay can be harmful. On the other hand, walking in a straight line is a conscious, voluntary response.Read more
Reflex action is a nerve mediated, automatic involuntary response to a stimulus without consulting the will. It is controlled by spinal cord. it needs an instantaneous response to a stimulus where delay can be harmful. On the other hand, walking in a straight line is a conscious, voluntary response. It is controlled by a part of hind-brain called cerebellum. It does not need an instantaneous response.
Opening and closing of stomata occurs due to turgor changes in guard cells. Moreover guard cells have differentially thickened walls i.e., outer walls are thin and inner walls are thick. Absorption of water causes guard cells to swell up and get curved out resulting in the opening of stomatal pore wRead more
Opening and closing of stomata occurs due to turgor changes in guard cells. Moreover guard cells have differentially thickened walls i.e., outer walls are thin and inner walls are thick. Absorption of water causes guard cells to swell up and get curved out resulting in the opening of stomatal pore whereas during flaccid condition, shrinking of guard cells takes places that causes closure of stomatal pore.
Autotrophic nutrition or photosynthesis is a process by which organic food is manufactured from inorganic raw materials. The basic requirements for the photosynthetic process are chlorophyll,carbon dioxide, water and light. During this process oxygen and water are produced as by-products.
Autotrophic nutrition or photosynthesis is a process by which organic food is manufactured from inorganic raw materials. The basic requirements for the photosynthetic process are chlorophyll,carbon dioxide, water and light. During this process oxygen and water are produced as by-products.
How do auxins promote the growth of a tendril around a support?
When tendrils come in contact with any support, the tip of the tendril in contact with the object does not grow as rapidly as the part of the tendril away from the object. this is due to the fast that auxin secreted in the tip diffuses towards the side opposite to the point of contact. So this inducRead more
When tendrils come in contact with any support, the tip of the tendril in contact with the object does not grow as rapidly as the part of the tendril away from the object. this is due to the fast that auxin secreted in the tip diffuses towards the side opposite to the point of contact. So this induces more growth on the side opposite to the point of contact. Thereby causing the tendril to circle around the object.
See lessWhat are plant hormones ?
Plant hormones or phytohormones are chemicals which help to regulate growth, development, differentiation, flowering and other physiological processes with or without being translocated to other sites.
Plant hormones or phytohormones are chemicals which help to regulate growth, development, differentiation, flowering and other physiological processes with or without being translocated to other sites.
See lessWhat is the role of the brain in reflex action?
Reflex arc are formed in the spinal cord itself although the information also goes on to reach brain where the encounter remains in the memory and make us aware of our action. So there is no direct role of the brain in reflex action. Secondly there are certain reflex actions under the control of braRead more
Reflex arc are formed in the spinal cord itself although the information also goes on to reach brain where the encounter remains in the memory and make us aware of our action. So there is no direct role of the brain in reflex action. Secondly there are certain reflex actions under the control of brain known as cerebral reflex. Closure of eyes exposed to flash of light, salivation at sight or smell of food, peristalsis, inspiration and expiration are few examples of cerebral reflexes.
See lessGive an example of a plant hormone that promotes growth.
Auxin promotes growth of cells. Gibberellins promote elongation of stem. Cytokinins promote cell division.
Auxin promotes growth of cells.
See lessGibberellins promote elongation of stem.
Cytokinins promote cell division.
How do we detect the smell of an agarbatti (incense stick)?
Smell of a agarbatti is initially detected by olfactory receptors located in our nose. They then send impulses to the olfactory centre in the forebrain.
Smell of a agarbatti is initially detected by olfactory receptors located in our nose. They then send impulses to the olfactory centre in the forebrain.
See lessWhich part of the brain maintains posture and equilibrium of the body?
Cerebellum is the part of hind-brain that maintains posture and equilibrium of the body.
Cerebellum is the part of hind-brain that maintains posture and equilibrium of the body.
See lessWhat is the difference between a reflex action and walking?
Reflex action is a nerve mediated, automatic involuntary response to a stimulus without consulting the will. It is controlled by spinal cord. it needs an instantaneous response to a stimulus where delay can be harmful. On the other hand, walking in a straight line is a conscious, voluntary response.Read more
Reflex action is a nerve mediated, automatic involuntary response to a stimulus without consulting the will. It is controlled by spinal cord. it needs an instantaneous response to a stimulus where delay can be harmful. On the other hand, walking in a straight line is a conscious, voluntary response. It is controlled by a part of hind-brain called cerebellum. It does not need an instantaneous response.
See lessHow do the guard cells regulate opening and closing of stomatal pores?
Opening and closing of stomata occurs due to turgor changes in guard cells. Moreover guard cells have differentially thickened walls i.e., outer walls are thin and inner walls are thick. Absorption of water causes guard cells to swell up and get curved out resulting in the opening of stomatal pore wRead more
Opening and closing of stomata occurs due to turgor changes in guard cells. Moreover guard cells have differentially thickened walls i.e., outer walls are thin and inner walls are thick. Absorption of water causes guard cells to swell up and get curved out resulting in the opening of stomatal pore whereas during flaccid condition, shrinking of guard cells takes places that causes closure of stomatal pore.
See lessWhat are the necessary conditions for autotrophic nutrition and what are its by products?
Autotrophic nutrition or photosynthesis is a process by which organic food is manufactured from inorganic raw materials. The basic requirements for the photosynthetic process are chlorophyll,carbon dioxide, water and light. During this process oxygen and water are produced as by-products.
Autotrophic nutrition or photosynthesis is a process by which organic food is manufactured from inorganic raw materials. The basic requirements for the photosynthetic process are chlorophyll,carbon dioxide, water and light. During this process oxygen and water are produced as by-products.
See lessWhat is the role of saliva in the digestion of food?
Saliva contains digestive enzyme called salivary amylase that breaks down complex starch into dextrin and moltose.
Saliva contains digestive enzyme called salivary amylase that breaks down complex starch into dextrin and moltose.
See less