4951 + Interview Questions in Biology in Class 10 Page 63 InterviewSolution

3101.	Question : In pteridophytes, the xylem mainly consisits of
Answer» vessels sclerids tracheids all of the above ANSWER :C

Discussion

3102.	Question : In protein synthesis the codon used as a start signal is
Answer» UAA CCA AUG GCA Answer :D

Discussion

3103.	Question :In pregnant woman having prolonged labour pains, if the childbirth has to be hastened, it is advisable to administer a hormone that can
Answer» ACTIVATE the SMOOTH muscles increase the METABOLIC rate release GLUCOSE into the blood stimulate the ovary Answer :A

Discussion

3104.	Question : In plasmodium, asexual reproduction occurs through ………………….
Answer» ANSWER :MULTIPLE FISSION

Discussion

3105.	Question : In plants the exchange of gases occur across the surface of :
Answer» STEM ROOT LEAVES All of these. Answer :C

Discussion

3106.	Question : In plants, the food is stored in the form of _________ whereas in animals it is stored in the from of _________.
Answer» SOLUTION :STRACH , GLYCOGEN

Discussion

3107.	Question : In Pinus seeds there are
Answer» TWO COTYLEDONS three cotyledons MANY cotyledons fleshy cotyledons ANSWER :C

Discussion

3108.	Question : In pigeon, which of the following glands secretes the milk in both sexes?
Answer» Liver Gizzard GLANDS Crop glands Salivary glands ANSWER :C

Discussion

3109.	Question : In phylum Platyhelminthes, the excretory or gans are
Answer» nephridia malpighian TUBULES flame cells (solenocytes) GREEN GLANDS Answer :C

Discussion

3110.	Question : On crossing a tall plant with a dwarf plant Mendel found that the ratio of dwarf plants in F2 generation was
Answer» `1 :3` `3 : 1` `1 : 1` `2 : 1` ANSWER :C

Discussion

3111.	Question : In our body during the process of respiration exchange of gases takes place in
Answer» lungs and throat alveoli and throat alveoli of lungs larynx and lungs Solution :Exchange of gases TAKES place in alveolusof lungs as they are RICHLY SUPPLIED with blood CAPILLARIES.

Discussion

3112.	Question : In one of the following a radar system is presenttolocate the position of food?
Answer» Bat Tiger Cat Rat ANSWER :A

Discussion

3113.	Question : In one of his experiments with pea plants Mendel observed that when a pure tall pea plant is crossed with a pure dwarf pea plant, in the first generation, F_1 only tall plants appear. (a) What happens to the traits of the dwarf plants in this case? (b) When the F_1 generation plants were self-fertilised, he observed that in the plants of second generation, F_2 both tall plants and dwarf plants were present. Why it happened? Explain briefly.
Answer» Solution :(a) The dwarf traits of the PLANTS is not expressed in the PRESENCE of the DOMINANT tall trait. (B) In the `F_2` generation, both the tall and dwarf traits are PRESENT in the ratio of 3:1. This showed that the traits for tallness and dwarfness are present in the `F_1` generation, but the dwarfness, being the recessive trait does not express itself in the presence of tallness, the dominant trait.

Discussion

3114.	Question : In nitrogen cycle the bacteria, which change proteins to ammonia, are known as
Answer» BACTERIA of DECAY denitrifying bacteria nitrogen fixing bacteria NITRATE bacteria ANSWER :A

Discussion

3115.	Question : In natural ecosystem, decomposers include
Answer» only MICROSCOPIC animals only bacteria and FUNGI the above two TYPES of organisms plus microscopic animals only the above two types of organisms Answer :B

Discussion

3116.	Question : In most of the algal genera, the dominant phase of life cycle is
Answer» Haplontic Diplontic Haplodiplontic Isomorphic Answer :A

Discussion

3117.	Question : In monocot stem cambium is present in between xylem and phloem.
Answer» SOLUTION :False - CORRECT Statement: In monocot stem, the cambium is absent in between XYLEM and phloem

Discussion

3118.	Question : In mitochondria, cristae acts as sites for
Answer» PROTEIN synthesis breakdown of macromolecules flavoprotein phosphorylation oxidation-reduction reactions Solution :N/A

Discussion

3119.	Question : In Mendel's monohybrid cross between tall and short pea plants, all offsprings were tall. What does this tell us about the trait? What is the ratio of tall and short plants in the F_(2)generation?
Answer» Solution :The appearance of all TALL PLANTS in the `F_(1)`generation shows that tall is the DOMINANT character while short is the RECESSIVE character. The ratio of Tall to Short in `F_(2)`generation is `3:1`.

Discussion

3120.	Question : In many plants the change over the from vegetative to reproductive phase takes place in response to
Answer» the length of the day MAINLY the FOOD material available in the the oxygen PRESENT in the air the SEVERITY of temperature Answer :A

Discussion

3121.	Question : In man why testes are located outside the abdominal cavity in scrotum ?
Answer» For security REASONS Because sperms formation needs lower TEMPERATURE than normal body temperature. For proper delivery of sperms to the female VAGINAL tract during copulation None of the above. Answer :B

Discussion

3122.	Question : In man, which of the following structures is analogous to the spiracles of cockroach?
Answer» alveoli lungs bronchioles nostrils ANSWER :D

Discussion

3123.	Question : In man the chromosome number is 46. How many chromosome are present in man's muscle cells?
Answer» 23 46 69 varies Answer :B

Discussion

3124.	Question : In man ribs are attached to
Answer» calvicle ileum sternum scapula Answer :C

Discussion

3125.	Question : In man percentage of CO_(2) transported as bicar bonates is
Answer» 5% to 10% 70% to 75% 90% to 95% 50% to 65% ANSWER :B

Discussion

3126.	Question : In man, expired air contains oxygen about
Answer» `4%` `15.7% ` `16%` `20% ` ANSWER :C

Discussion

3127.	Question : In mammals, the middle ear ossicles from inside to outside are in the sequence of
Answer» STAPES, INCUS, MALLEUS stapes, malleus, incus incus, malleus, stapes malleus, incus, stapes Answer :A

Discussion

3128.	Question : In mammals, the autonomic system is composed of
Answer» SYMPATHETIC and PARASYMPATHETIC nerves cranial and SPINAL nerves brain and spinal CORD medullated and nonmedullated nerves Answer :A

Discussion

3129.	Question : In mammals, oxygenated blood enters the heart at the
Answer» RIGHT atrium left atrium right VENTRICLE left ventricle ANSWER :B

Discussion

3130.	Question : In mammals Meissner's corpuscles are found
Answer» spleen and manufacture lymphocytes thymus and SECRETE thymosin HORMONE skin and are tactile receptors skin and are THERMO receptors Answer :C

Discussion

3131.	Question : In male rabbits, this structure is found in the Ventral side of Anus ………….. .
Answer» CLAWS SWEAT GLANDS Penis Abdomen Answer :C

Discussion

3132.	Question : (i) A husband has 46 chromosomes, his wife has 46 chromosomes. Then why don't their offsprings have 46 pairs of chromosomes, which is obtained by the fusion of male and female gametes? (ii) "Geographical isolation is not a major factor in the speciation of a self pollinating plant species." Justify this statement with the help of an example.
Answer» Solution :(i) Male individual has 46 chromosomes but because the gametes are always haploid 1.e., they have half the number of chromosomes, sperms will be haploid (23 chromosomes). Female individual also contains only 23 chromosomes in egg. It is the FUSION of this sperm and egg which leads to an offspring with 46 chromosomes. (ii) GEOGRAPHICAL isolation will not be a MAJOR FACTOR in the speciation of a self-pollinating plant species. It involves the same flower / plant from where male and female gametes are formed.

Discussion

3133.	Question : Hypothalamus is the thermoregulatory centre of human body.
Answer» ANSWER :1

Discussion

3134.	Question : Hypophysis forms part of
Answer» stem radicle and ROOT CAP embryo vesicle Answer :B

Discussion

3135.	Question : Hypertension: Hypercholesterolomia : Glycosuria :__________
Answer» SOLUTION :POLYPHAGIA

Discussion

3136.	Question : Hypersecretion of growth hormone by pituitary results in
Answer» Dwarfism Gigantism Cretinism Myxedema Answer :B

Discussion

3137.	Question : Hypermetropia is a condition in human eye in which the image is formed
Answer» in FRONT of retina and can be CORRECTED by using a CONVEX lens in front of retina and can be corrected by using a concave lens behind the retina and can be corrected by using a concave lens behind the retina and can be corrected by using a convex lens Answer :D

Discussion

3138.	Question : Hydropower plants convert the …………………… of falling water into electricity.
Answer» ANSWER :POTENTIAL ENERGY

Discussion

3139.	Question :Hydrophily is best demonstrated by
Answer» Nelumbium Vallisneria Nymphaea Ranunculus Answer :B

Discussion

3140.	Question : Hydrogen has been used as a rocket fuel. Would you consider it a cleaner fuel than CNG ? Why or why not ?
Answer» Solution :Yes, HYDROGEN is a cleaner fuel than CNG because hydrogen burnt in PRESENCE of oxygen produces water vapours `(H_(2)OG)` whereas CNG that contain methane burns to PRODUCE carbon dioxide and carbon MONOXIDE.

Discussion

3141.	Question : Hydrogen bonds between two strands of DNA can break due to,
Answer» HIGH TEMPERATURE High pH Low pH All of them Answer :B

Discussion

3142.	Question : Hydrochloric acid is found in our stomach. What purpose does it serve in alimentary canal ?
Answer» Solution :(i) Killing of germs present in FOOD (II) CONVERSION of INACTIVE pepsinogen into active form PEPSIN.

Discussion

3143.	Question : Hydra sometimes moves upon its tentacles, using them as legs. This is known as
Answer» somersaulting gliding walking looping ANSWER :C

Discussion

3144.	Question : Hydra respires through
Answer» mesogloea pellicle general BODY SURFACE gastrodermis Answer :C

Discussion

3145.	Question : Hydra recognises its prey by
Answer» SPECIAL organs chemical STIMULUS of PREY nematocyst mechanical stimulus of prey ANSWER :D

Discussion

3146.	Question : Hybridisation through protoplast fusion is known as
Answer» parthenogenesis parasexual hybridisation sexual hybridisation asexual hybridisation Answer :B

Discussion

3147.	Question : Hybridization experiment performed by Mendel between a tall (TT) plant and a dwarf (tt) plant of Pisum sativum gave the following result in F_(2) generation
Answer» all PLANTS are tall tall plants and DWARF plants in the RATIO `3:1` tall plants and dwarf plants in the ratio tall plants and dwarf plants in the ratio `2:1` ANSWER :A::B::C::D

Discussion

3148.	Question : Hybrid is an offspring from a cross between genetically different parent.
Answer» ANSWER :1

Discussion

3149.	Question : Humus is an example of
Answer» crystalloids organic colloids SOIL STRUCTURE NONE of them ANSWER :B

Discussion

3150.	Question : Human offspring would be female, if 23rd pair of chromosome in zygote is
Answer» YY XY XX XYY Answer :C

Discussion

Explore topic-wise InterviewSolutions in .

Question : In pteridophytes, the xylem mainly consisits of

Question : In protein synthesis the codon used as a start signal is

Question :In pregnant woman having prolonged labour pains, if the childbirth has to be hastened, it is advisable to administer a hormone that can

Question : In plasmodium, asexual reproduction occurs through ………………….

Question : In plants the exchange of gases occur across the surface of :

Question : In plants, the food is stored in the form of _________ whereas in animals it is stored in the from of _________.

Question : In Pinus seeds there are

Question : In pigeon, which of the following glands secretes the milk in both sexes?

Question : In phylum Platyhelminthes, the excretory or gans are

Question : On crossing a tall plant with a dwarf plant Mendel found that the ratio of dwarf plants in F2 generation was

Question : In our body during the process of respiration exchange of gases takes place in

Question : In one of the following a radar system is presenttolocate the position of food?

Question : In nitrogen cycle the bacteria, which change proteins to ammonia, are known as

Question : In natural ecosystem, decomposers include

Question : In most of the algal genera, the dominant phase of life cycle is

Question : In monocot stem cambium is present in between xylem and phloem.

Question : In mitochondria, cristae acts as sites for

Question : In Mendel's monohybrid cross between tall and short pea plants, all offsprings were tall. What does this tell us about the trait? What is the ratio of tall and short plants in the F_(2)generation?

Question : In many plants the change over the from vegetative to reproductive phase takes place in response to

Question : In man why testes are located outside the abdominal cavity in scrotum ?

Question : In man, which of the following structures is analogous to the spiracles of cockroach?

Question : In man the chromosome number is 46. How many chromosome are present in man's muscle cells?

Question : In man ribs are attached to

Question : In man percentage of CO_(2) transported as bicar bonates is

Question : In man, expired air contains oxygen about

Question : In mammals, the middle ear ossicles from inside to outside are in the sequence of

Question : In mammals, the autonomic system is composed of

Question : In mammals, oxygenated blood enters the heart at the

Question : In mammals Meissner's corpuscles are found

Question : In male rabbits, this structure is found in the Ventral side of Anus ………….. .

Question : Hypothalamus is the thermoregulatory centre of human body.

Question : Hypophysis forms part of

Question : Hypertension: Hypercholesterolomia : Glycosuria :__________

Question : Hypersecretion of growth hormone by pituitary results in

Question : Hypermetropia is a condition in human eye in which the image is formed

Question : Hydropower plants convert the …………………… of falling water into electricity.

Question :Hydrophily is best demonstrated by

Question : Hydrogen has been used as a rocket fuel. Would you consider it a cleaner fuel than CNG ? Why or why not ?

Question : Hydrogen bonds between two strands of DNA can break due to,

Question : Hydrochloric acid is found in our stomach. What purpose does it serve in alimentary canal ?

Question : Hydra sometimes moves upon its tentacles, using them as legs. This is known as

Question : Hydra respires through

Question : Hydra recognises its prey by

Question : Hybridisation through protoplast fusion is known as

Question : Hybridization experiment performed by Mendel between a tall (TT) plant and a dwarf (tt) plant of Pisum sativum gave the following result in F_(2) generation

Question : Hybrid is an offspring from a cross between genetically different parent.

Question : Humus is an example of

Question : Human offspring would be female, if 23rd pair of chromosome in zygote is

Question : In plants, the food is stored in the form of _ whereas in animals it is stored in the from of _.