Answers for AP SSC biology important vsa questions part-2
31. Nissal granules are groups of ribosome and are made up of RNA and proteins. They are present in the Cytoplasm of cyton.
32. When a stimulus is applied to the neuron, a small electric potential of 0.055volts or 55 milli volts is generated. This is called action potential.
33. Cerebrospinal fluid is a fluid present between outer duramater and middle arachnoid membranes of the Brain and spinal cord. It protects the brain and spinal cord from injuries and provides nutrients to them.
34. On the surface of brain there are several grooves called gyri and ridges called sulci. They increase the Surface area of cerebrum so that it can accommodate more number of neurons.
35. In a spinal cord grey matter is in the form of H or butterfly. Each segment of the spinal cord is called as a horn. The upper two horns are called dorsal horns and lower two are called ventral horns.
36. 10th cranial nerve is called vagus. It is important because it controls the heart beat and secretion of pancreas.
37. Reflex actions are fast, automatic and involuntary responses of the body to the unexpected external stimuli. The structural and functional unit that carries out reflex action is called reflex arc.
38. The special branch that develops from the underground part of the stem of the parent plant is called as a Sucker. The buds that grow on the leaf margin in bryophyllum plant are called epiphyllous buds or leaf buds.
39. a) The portion of the plant that is taken from the parent for culturing on nutrient media during tissue Culture is called explant.
b) The unorganized mass of cells formed by the division of explant during tissue culture is called callus.
c) The ability of a plant cell to give rise to whole plant is called as totipotency.
40. Thousands of spermatozoa discharged from male frog into water is called as milt. In female frog large number of eggs is released as a mass. This is called as spawn.
41. Macronucleus in paramecium is responsible for vegetative functions and micronucleus for reproductive Functions.
42. In majority of animals sexes are separate and male and female are distinct. This is called sexual dimorphism. The external features through which males and females can be distinguished are called secondary sexual characters.
43. The animals which possess both male and female sex organs are called hermaphrodites and this phenomenon is called as hermaphroditism.Ex. Protozoa, coelenterate, platyhelminthes, nemtihelminthes and mollusca.
44. Testis matures earlier than ovaries. This prevents self fertilization in earth worm.
45. Release of ovum from follicle is called ovulation.
46. Ruptured follicle is called corpus luteum. It secretes female sex hormones called progesterone and oestrogen.
47. The tests that are used to detect HIV antibodies are
a) ELISA- enzyme linked immuno sorbent assay. b) Western blot and c) PCR-polymerase chain reaction.
48. The enzymes in HIV are protease, integrase and reverse transcriptase. Reverse transcriptase is unique as It helps in ever changing form (genetic material) of HIV.
49. Rice is rich in carbohydrates and poor in proteins. Meat is rich in proteins and poor in carbohydrates. If You eat meat or rice alone; it may result in deficiency of either proteins or carbohydrates.
50. The substances which are rich sources of essential amino acids are considered as biologically complete Proteins. Ex. Milk and meat.
51. Vegetables, grains and fruits have lesser amounts of essential amino acids. So they are called biological. Incomplete proteins.
52.1 gm of glucose= 4 k. cal; 1 gm of fat = 9.45 k. cals of energy.
53. Eating of food that doesn’t have one or more than one nutrients in required amount is called malnutrition
54. The chemical name of niacin is nicotinic acid. It is needed for the metabolism of carbohydrates, proteins And fats.
55. Patients of pellagra show dermatitis, diarrhea and dementia. The skin when exposed to sunlight become Pigmented, scaly and cracked.
56. B6- pyridoxine. B12- cyanocobalamine.
57. In jaundice, the yellow colour is due to presence of yellow coloured pigment called bilirubin in blood And tissues.
58. Chill and fever occurs once in every 2 to 3 days regularly when the merozoites are released by the Rupture of red blood cells.
59. Person affected with mumps will have pain in salivary glands mostly parotid glands.There will be pain In opening the mouth, ear and fever.
60. The main symptoms of measles are fever followed by a rash. Sneezing, running nose, cough and redness Of eyes are also observed. If disesase persists for a longer time, reduction of growth, mental deterioration and even paralysis is seen.
All the Best
M.Kiran M.SC., B.Ed.
AP SSC biology important questions
31. Nissal granules are groups of ribosome and are made up of RNA and proteins. They are present in the Cytoplasm of cyton.
32. When a stimulus is applied to the neuron, a small electric potential of 0.055volts or 55 milli volts is generated. This is called action potential.
33. Cerebrospinal fluid is a fluid present between outer duramater and middle arachnoid membranes of the Brain and spinal cord. It protects the brain and spinal cord from injuries and provides nutrients to them.
34. On the surface of brain there are several grooves called gyri and ridges called sulci. They increase the Surface area of cerebrum so that it can accommodate more number of neurons.
35. In a spinal cord grey matter is in the form of H or butterfly. Each segment of the spinal cord is called as a horn. The upper two horns are called dorsal horns and lower two are called ventral horns.
36. 10th cranial nerve is called vagus. It is important because it controls the heart beat and secretion of pancreas.
37. Reflex actions are fast, automatic and involuntary responses of the body to the unexpected external stimuli. The structural and functional unit that carries out reflex action is called reflex arc.
38. The special branch that develops from the underground part of the stem of the parent plant is called as a Sucker. The buds that grow on the leaf margin in bryophyllum plant are called epiphyllous buds or leaf buds.
39. a) The portion of the plant that is taken from the parent for culturing on nutrient media during tissue Culture is called explant.
b) The unorganized mass of cells formed by the division of explant during tissue culture is called callus.
c) The ability of a plant cell to give rise to whole plant is called as totipotency.
40. Thousands of spermatozoa discharged from male frog into water is called as milt. In female frog large number of eggs is released as a mass. This is called as spawn.
41. Macronucleus in paramecium is responsible for vegetative functions and micronucleus for reproductive Functions.
42. In majority of animals sexes are separate and male and female are distinct. This is called sexual dimorphism. The external features through which males and females can be distinguished are called secondary sexual characters.
43. The animals which possess both male and female sex organs are called hermaphrodites and this phenomenon is called as hermaphroditism.Ex. Protozoa, coelenterate, platyhelminthes, nemtihelminthes and mollusca.
44. Testis matures earlier than ovaries. This prevents self fertilization in earth worm.
45. Release of ovum from follicle is called ovulation.
46. Ruptured follicle is called corpus luteum. It secretes female sex hormones called progesterone and oestrogen.
47. The tests that are used to detect HIV antibodies are
a) ELISA- enzyme linked immuno sorbent assay. b) Western blot and c) PCR-polymerase chain reaction.
48. The enzymes in HIV are protease, integrase and reverse transcriptase. Reverse transcriptase is unique as It helps in ever changing form (genetic material) of HIV.
49. Rice is rich in carbohydrates and poor in proteins. Meat is rich in proteins and poor in carbohydrates. If You eat meat or rice alone; it may result in deficiency of either proteins or carbohydrates.
50. The substances which are rich sources of essential amino acids are considered as biologically complete Proteins. Ex. Milk and meat.
51. Vegetables, grains and fruits have lesser amounts of essential amino acids. So they are called biological. Incomplete proteins.
52.1 gm of glucose= 4 k. cal; 1 gm of fat = 9.45 k. cals of energy.
53. Eating of food that doesn’t have one or more than one nutrients in required amount is called malnutrition
54. The chemical name of niacin is nicotinic acid. It is needed for the metabolism of carbohydrates, proteins And fats.
55. Patients of pellagra show dermatitis, diarrhea and dementia. The skin when exposed to sunlight become Pigmented, scaly and cracked.
56. B6- pyridoxine. B12- cyanocobalamine.
57. In jaundice, the yellow colour is due to presence of yellow coloured pigment called bilirubin in blood And tissues.
58. Chill and fever occurs once in every 2 to 3 days regularly when the merozoites are released by the Rupture of red blood cells.
59. Person affected with mumps will have pain in salivary glands mostly parotid glands.There will be pain In opening the mouth, ear and fever.
60. The main symptoms of measles are fever followed by a rash. Sneezing, running nose, cough and redness Of eyes are also observed. If disesase persists for a longer time, reduction of growth, mental deterioration and even paralysis is seen.
All the Best
M.Kiran M.SC., B.Ed.
AP SSC biology important questions
Written by Ramu Magham
Ramu Magham is an English Language Teacher who drives his students crazy with trending technologies and current happenings.
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