22339 + Interview Questions in Biology in Class 11 Page 139 InterviewSolution

6901.	Question : Which event does not occur during prophase in an animal cell?
Answer» NUCLEAR ENVELOPE disperses Chromosomes replicate Spindle BEGINS to form Chromosomes condense Answer :B

Discussion

6902.	Question : Which enzyme is essential for the formation of nitrogen?
Answer» Nitrogenase NITRATE redctase Transferase Transaminase Solution :Nitrate redctase

Discussion

6903.	Question : Which enzyme is involved in conversion of a molecular into a isomer?
Answer» LYASES SYNTHETASE ISOMERASE Trans/erase ANSWER :C

Discussion

6904.	Question : Which enzyme hands over electrons to oxygen during oxidative phosphorylation ?
Answer» SOLUTION :CYTOCHROME OXIDASE (CYT. A and cyt. `a_(3)`).

Discussion

6905.	Question : Which enzyme initiates protein digestion ?
Answer» Pepsin Trypsin AMINOPEPTIDASE CARBOXYPEPTIDASE SOLUTION :N/A

Discussion

6906.	Question : Which enzyme converts glucose into alcohol ?
Answer» Zymase Diastase Invertase Lipase Answer :A

Discussion

6907.	Question : Which enzyme acts on milk protein in infants in the presence of calcium ions?
Answer» PEPSIN Chymotrypsin Lipase Renin SOLUTION :N/A

Discussion

6908.	Question : Which endocrine gland stores its secretions is intercellular space before releasing into blood ?
Answer» ADRENAL PANCREAS TESTIS THYROID ANSWER :D

Discussion

6909.	Question : Which elements are essential for the photophosphorylation?
Answer» MG and P Zn and I K and CI Mn and CL ANSWER :D

Discussion

6910.	Question : Which elements are called micronutri ents? Name any four.
Answer» SOLUTION :MICRONUTRIENTS are required in minute QUANTITIES like LESS than 0.1 mg/g of dry matter. Mn, B, Cu, Mo.

Discussion

6911.	Question : Which element occurs in chlorophyll and haemoglobin?
Answer» SOLUTION :(a) In CHLOROPHYLL MAGNESIUM (b) In HAEMOGLOBIN iron

Discussion

6912.	Question : Which element is required in the meristematic tissues like buds, leaves and root tips?
Answer» SOLUTION :POTASSIUM (K+).

Discussion

6913.	Question : Which element is required for the germination of pollen grains ?
Answer» Boron Calcium Chlorine Potassium Answer :A

Discussion

6914.	Question : Which element is involved in the opening and closing of stomata?
Answer» SOLUTION :POTASSIUM

Discussion

6915.	Question : Which element is located at the center of the porphyrin ring in chlorophyll?
Answer» Potassium Manganese Calcium Magnesium Answer :D

Discussion

6916.	Question : Which element is present in the middle lamellae of cell wall?
Answer» SOLUTION :CALCIUM CA++.

Discussion

6917.	Question : Which element is fixed by the legumi nous plants?
Answer» SOLUTION :NITROGEN.

Discussion

6918.	Question : Which element activates the enzyme nitrate reductase during the nitrogen fixation?
Answer» molybdenum boron copper zinc Answer :A

Discussion

6919.	Question : Which does not cause stomatal opening?
Answer» Light Circadian rhythm Influx of `K^(+)` LONS HIGH `CO_2` concentration Answer :D

Discussion

6920.	Question :Which does not have racemose type ofinflorescence?
Answer» Coriander Cassia FICUS Sunflower Answer :C

Discussion

6921.	Question : Whichdoesnotaffect oxy - haemoglobin curve:
Answer» HIGH `O_(2)`and LOW `CO_(2)` High bodytemperature High BODY `O_(2)`and high Hb High pH Answer :D

Discussion

6922.	Question : Which diseases are caused due to deficiency of nutritive substances/nutrients ? Which are their symptoms ?
Answer» Solution :In many developing countries of south and south east Asia, west and middle Africa the deficiency of protein and total food is spread very much. PEM (Protein - Energy - Malnutrition): It affects the population during dry drought, political unstability. Marasmus and Kwashiorkor are seen in children. (i) Marasmus : It OCCURS due to stimulated deficiency of protein and calory. It is seen in children below 1 year. It occurs due to intake of other insufficient nutritious food very early in place of mother.s milk. Symptoms : Deficiency of proteins, weak growth, exchange of tissue protein, very weak body, limbs being thinner, skin dry, thin and wrinkled. A noticeable decrease is seen in growth rate and weight of the body. The growth and development of brain and parts of brain become weak. (ii)Kwashiorkor : It occurs due to deficiency of calory or protein. It is caused to children above ONE year due to high calory in place of mother.s milk and food having less protein, symptoms are seen like - failure of muscles, limbs thinner, growth and development of brain becomes failure but some fats remain deposited under skin, swelling in some parts of the body.

Discussion

6923.	Question : Which disease does deficiency of insulin lead to ?
Answer» SOLUTION :DIABETES MELLITUS.

Discussion

6924.	Question : Which diagram shows the correct blood circulation
Answer» DIAGRAM 1 Diagram 2 Diagram 3 Diagram 4 Solution :N//A

Discussion

6925.	Question : Which disaccharide has different linkage?
Answer» Maltose Starch Sucrose Lactose Answer :C

Discussion

6926.	Question : Which differentiates leaf of dicots from monocots?
Answer» PARALLEL venation differentiation of palisade and SPONGY parenchyma stomata only on upper side stomata both on upper and lower sides

Discussion

6927.	Question : Which dead tissue contributes the most to mechanical strength of plant?
Answer» SCLERENCHYMA Cork Sclereids Collenchyma Answer :A

Discussion

6928.	Question : Which cytoskeletal element is not correctly associated withits characteristic?
Answer» CILIA are SMALL extensions of membrane-surroundedmicrotubules Microtubules are made up of a globular protein calledtubulin CENTRIOLES are found in the microtubule organisingcentres of plants Flagella have a 9 + 2 PATTERN of microtubule structure Solution :Centrioles are found in the microtubule organisingcentres of plants

Discussion

6929.	Question : Which creatures are the direct or indirect food of all the creatures on the ocean's surface?
Answer» PROTOZOANS PLANKTON Fish Aquatic insects Answer :B

Discussion

6930.	Question : Who gave five kingdom classification ? On which criteria it was based and mention its main characteristics or merits ?
Answer» CELL STRUCTURE Thallus organization MODE of nutrition All of these Answer :D

Discussion

6931.	Question : Which correctly describes a step in auditory signal transduction ?
Answer» Displacement of the basilar membrane with respect to the tectorial membrane stimulates stereocilia on the hair cells. Pressure waves on the oval window cause vibrations of the melleus, which are transferred VIA the stapes to the round window. Movement of the stapes causes oscillations in the tympanic membrane, which is in CONTRACT with the endolymph Oscillations of the stapes against the oval window set up pressure waves in the SEMICIRCULAR canals. Solution :Pressure waves traveling down the cochlea make the cochlear duct vibrate, moving the basilar membrane against the stationary tectorial membrane and bending the hair cells that bridge the GAP between the TWO .

Discussion

6932.	Question : Which coronary artery diseases is caused due to narrowing of the limen of arteries ?
Answer» Solution :Coronary artery disease often referred to as Atherosclerosis, AFFECTS the vessels that supply BLOOD to the heart muscle. It is caused by DEPOSITE of calcium, fat cholesterol and fibrous TISSUES which maker the limen of arteries narrower.

Discussion

6933.	Question : Which constitutes the thickening in collenchyma
Answer» Suberin Cutin pectinised Lignin Answer :C

Discussion

6934.	Question : Which compound acts as CO_2acceptor in Calvin cycle ?
Answer» SOLUTION :RIBULOSE 1, 5 bisphosphate.

Discussion

6935.	Question : Which component of xylem is found in and is characteristic of angiosperms and help to transport water?
Answer» SOLUTION :XYLEM VESSELS.

Discussion

6936.	Question : Which component of phloem is non living?
Answer» SOLUTION :PHLOEM FIBERS or BAST fibers.

Discussion

6937.	Question : Which component is present in a prokaryotic cell?
Answer» ER CHLOROPLASTS RIBOSOMES MITOCHONDRIA SOLUTION :Ribosomes

Discussion

6938.	Question : Whichcommon biomoleculesobtained from the following due to breakdownof fat carbohydrates and protein ? (A) Fructose -1,6-biphosphate (B) Pyruvic acid (C) Acetyl CO-A (D) Glucose 6-phosphate
Answer» FRUCTOSE 1-6 biphosphate PYRUVIC acid Acetyl COA Glucose 6-phosphate Answer :A::C

Discussion

6939.	Question : Which class of protozos is totally parasitic ?
Answer» Sporozoa Mastigophora Ciliate Sarcodina Answer :A

Discussion

6940.	Question : Which class of kingdom fungi has both unicellular as well as multicellularmember ? When is a fungus called coprophilous ?
Answer» Solution :ASCOMYCETES : Yeast (Unicellular), PENICILLUM (Multicellular), Coprophilous, MEANS fungi which GROW on dung.

Discussion

6941.	Question : Which class of fungi is called 'Fungi Imperfecti?
Answer» ASCOMYCETES DEUTEROMYCETES BASIDIOMYCETES ZYGOMYCETES SOLUTION :Basidiomycetes

Discussion

6942.	Question : Which chromosome may lost during cell division ?
Answer» If both assertion and REASON are TRUE and the reason is the CORRECT explanation of the assertion. If both assertion and reason are true but reason is not the correct explanation of the assertion. If assertion is true but reason is false. If both assertion and reason are false. Answer :B

Discussion

6943.	Question : Which chlorophyll molecule does not have a phytol tail?
Answer» CHL - a CHl - b Chl- C Chl - d Answer :C

Discussion

6944.	Question : Which chemical property is shared by all types of lipids forming the plasma membrane ?
Answer» SUGAR COMPONENT GLYCEROL backbone Phosphate group Hydrophobic REGION Answer :D

Discussion

6945.	Question : Which chemical is present in chitinous exoskeleton?
Answer» SOLUTION :MUCOPOLYSACCHARIDE.

Discussion

6946.	Question : Which chemical accumulates in a fatigued muslce?
Answer» SOLUTION :LACTIC ACID.

Discussion

6947.	Question : Which charcter is not associated with plant where shull studies inbreeding depression while Miller and Letham extracted a hormone from its seeds ?
Answer» Atactostele in STEM BUNDLE sheath in leaf Chromosome NUMBER 30 in endosperm Medulla absent in ROOT ANSWER :C

Discussion

6948.	Question :Which characters can be shown in floral formula?
Answer» ADHESION Symmetry Ovary POSITION on thalamus All of the above ANSWER :D

Discussion

6949.	Question : Which characteristic were considered while placing fungi in a separate kingdom?
Answer» Solution :R.H. Whittaker, an American TAXONOMIST proposed five KINGDOM classification in the year 1969. The classification is based on the complexity of CELL structure and organization of thallus. It is based on the mode of nutrition Separation of fungi from plants Fungi are ubiquitous , eukaryotic, achlorophyllous heterotrophic ORGANISMS. They exist in unicellular or multicellular FORMS.

Discussion

6950.	Question : Which characteristic is not of Americana Periplaneta ? (A) Exoskeleton is made up of N-acetyl glucosamine. (B) It possesses segmented structure. (C) Coelom I body cavity is small coelom. (D) During embryo development, radial and irregular division occurs.
Answer» Exoskeleton is MADE up of N-acetyl glucoamine. It possesses segmented structure. COELOM I BODY cavity is small coelom. During embryo DEVELOPMENT, radial and IRREGULAR division occurs. Answer :D

Discussion

Explore topic-wise InterviewSolutions in .

Question : Which event does not occur during prophase in an animal cell?

Question : Which enzyme is essential for the formation of nitrogen?

Question : Which enzyme is involved in conversion of a molecular into a isomer?

Question : Which enzyme hands over electrons to oxygen during oxidative phosphorylation ?

Question : Which enzyme initiates protein digestion ?

Question : Which enzyme converts glucose into alcohol ?

Question : Which enzyme acts on milk protein in infants in the presence of calcium ions?

Question : Which endocrine gland stores its secretions is intercellular space before releasing into blood ?

Question : Which elements are essential for the photophosphorylation?

Question : Which elements are called micronutri ents? Name any four.

Question : Which element occurs in chlorophyll and haemoglobin?

Question : Which element is required in the meristematic tissues like buds, leaves and root tips?

Question : Which element is required for the germination of pollen grains ?

Question : Which element is involved in the opening and closing of stomata?

Question : Which element is located at the center of the porphyrin ring in chlorophyll?

Question : Which element is present in the middle lamellae of cell wall?

Question : Which element is fixed by the legumi nous plants?

Question : Which element activates the enzyme nitrate reductase during the nitrogen fixation?

Question : Which does not cause stomatal opening?

Question :Which does not have racemose type ofinflorescence?

Question : Whichdoesnotaffect oxy - haemoglobin curve:

Question : Which diseases are caused due to deficiency of nutritive substances/nutrients ? Which are their symptoms ?

Question : Which disease does deficiency of insulin lead to ?

Question : Which diagram shows the correct blood circulation

Question : Which disaccharide has different linkage?

Question : Which differentiates leaf of dicots from monocots?

Question : Which dead tissue contributes the most to mechanical strength of plant?

Question : Which cytoskeletal element is not correctly associated withits characteristic?

Question : Which creatures are the direct or indirect food of all the creatures on the ocean's surface?

Question : Who gave five kingdom classification ? On which criteria it was based and mention its main characteristics or merits ?

Question : Which correctly describes a step in auditory signal transduction ?

Question : Which coronary artery diseases is caused due to narrowing of the limen of arteries ?

Question : Which constitutes the thickening in collenchyma

Question : Which compound acts as CO_2acceptor in Calvin cycle ?

Question : Which component of xylem is found in and is characteristic of angiosperms and help to transport water?

Question : Which component of phloem is non living?

Question : Which component is present in a prokaryotic cell?

Question : Whichcommon biomoleculesobtained from the following due to breakdownof fat carbohydrates and protein ? (A) Fructose -1,6-biphosphate (B) Pyruvic acid (C) Acetyl CO-A (D) Glucose 6-phosphate

Question : Which class of protozos is totally parasitic ?

Question : Which class of kingdom fungi has both unicellular as well as multicellularmember ? When is a fungus called coprophilous ?

Question : Which class of fungi is called 'Fungi Imperfecti?

Question : Which chromosome may lost during cell division ?

Question : Which chlorophyll molecule does not have a phytol tail?

Question : Which chemical property is shared by all types of lipids forming the plasma membrane ?

Question : Which chemical is present in chitinous exoskeleton?

Question : Which chemical accumulates in a fatigued muslce?

Question : Which charcter is not associated with plant where shull studies inbreeding depression while Miller and Letham extracted a hormone from its seeds ?

Question :Which characters can be shown in floral formula?

Question : Which characteristic were considered while placing fungi in a separate kingdom?

Question : Which characteristic is not of Americana Periplaneta ? (A) Exoskeleton is made up of N-acetyl glucosamine. (B) It possesses segmented structure. (C) Coelom I body cavity is small coelom. (D) During embryo development, radial and irregular division occurs.