24277 + Interview Questions in Biology in Class 12 Page 390 InterviewSolution

19451.	Question :Classify the following into analogous and homologous organs: Trunk of an elephant and hand of chimpanzee
Answer» SOLUTION :ANALOGOUS (Trunk of an elephant is modified UPPER LIP)

Discussion

19452.	Question :Classify the following into analogous and homologous organs: Tendril of pea and spines of cactus
Answer» SOLUTION :HOMOLOGOUS

Discussion

19453.	Question :Classify the following into analogous and homologous organs: Wing of a bat and wing of an insect
Answer» SOLUTION :ANALOGOUS

Discussion

19454.	Question :Classify the following into analogous and homologous organs: Nails of humans and claws of animals
Answer» SOLUTION :HOMOLOGOUS

Discussion

19455.	Question : Classify the following as examples of homology and analogy-Thorn of Bougainvillea and tendrils of Cucurbits.s
Answer» SOLUTION :HOMOLOGY

Discussion

19456.	Question : Classify the following as examples of homology and analogy-Hearts of fish and crocodile
Answer» SOLUTION :HOMOLOGY

Discussion

19457.	Question : Classify the diseases given below into two groups based on the causative organism of each group (Typhoid, Malaria,Diphtheria, Amoebia).
Answer» SOLUTION :

Discussion

19458.	Question : Classify the aquatic biomes of Earth.
Answer» SOLUTION :1. FRESHWATER (Lakes, ponds and RIVERS) 2. Brackish water (Estuaries/ Wetlands) 3. MARINE (CORAL reefs, pelagic zones and abyssal zones)

Discussion

19459.	Question : Classify soil based on its formation.
Answer» Solution :Based on SOIL formation (pedogenesis), the soils are divided into: 1. Residual soils -These are soils formed by weathering and pedogenesis of the ROCK. 2. Transported soils-These are transported by VARIOUS AGENCIES.

Discussion

19460.	Question : Classify restriction enzymes. Mention the function of each.
Answer» SOLUTION :

Discussion

19461.	Question : Classify restriction enzyme based on their mode of action.
Answer» Solution :BASED on their mode of action restriction ENZYME are classified into Exonucleases and Endonuclearses. a. Exonucleases are enzymes which remove nucleotides one at atime from the end of a DNA molecule .e.g Bal 31 and Exnuclease III. b. Endonucleases are enzyme which break the internal phosphodiester BONDS within a DNA molecule e.g. Hind II , EcoRI , Pvul , BAMHI amd TaqI.

Discussion

19462.	Question : Classify plant tissue culture based on the explants used.
Answer» Solution :BASED on the explants some other PLANT tissue culture types are: 1. Organ culture 2. Meristem culture 3. Protoplast culture 4. Cell culture

Discussion

19463.	Question : Classify nucleic acid based on sugar molecules.
Answer» SOLUTION :There are two types of nucleic acids depending on the TYPE of pentose sugar. Those containing DEOXYRIBOSE sugar are called Deoxyribo Nucleic Acid (DNA) and those with ribose sugar are known as Ribonucleic Acid (RNA). The only difference between these two sugars is that there is one OXYGEN ATOM less in deoxyribose.

Discussion

19464.	Question : Classify mutations based on the effect on translation.
Answer» SOLUTION :(a) SILENT MUTATION (B) Mis-sense mutation (C) Non-sense mutation (d) Frameshift mutation

Discussion

19465.	Question : Classify degradable pollutants.
Answer» Solution :Based on the time taken to breakdown into their ingredients, degradable pollutants are classified as rapidly degradable (non-PERSISTENT) and SLOWLY degradable (persistent). a) Rapidly degradable or non-persistent pollutants: These can be broken down by natural processes. DOMESTIC sewage and vegetable waste are examples of such pollutants. b) Slowly degradable or persistent pollutants: These are pollutants that remain in the environment for many years in an unchanged condition and take decades or longer to DEGRADE, as in the case of DDT.

Discussion

19466.	Question : Classify gene interactions with an example.
Answer» Solution :The gene INTERACTIONS MAY be (a) Intragenic gene interaction . E.g.: CODOMINANCE (b) Intergenic gene interaction . E.g.: EPISTASIS

Discussion

19467.	Question : Classify cross over.
Answer» SOLUTION :1. Single cross over: FORMATION of single chiasma and involves only two CHROMATIDS out of four. 2. Double cross over: Formation of two chiasmata and involves two or three or all four strands. 3. MULTIPLE cross over: Formation of more than two chiasmata and crossing over frequency is extremely low.

Discussion

19468.	Question : Classify animal breeding based on time.
Answer» SOLUTION :On the basis of time, breeding animals are of two types: SEASONAL breeders and continues breeders. Seasonal breeders reproduce at particular PERIOD of the year such as frogs, lizards, most BIRDS, deers etc., Continuous breeders continue to BREED throughout their sexual maturity e.g. honey bees, poultry, rabbit etc.

Discussion

19469.	Question : Classify antigens based on origin.
Answer» Solution :On the basis of origin ,ANTIGENS are classified into ecogenous antigens and endogenous antigens. The antigens which enter the host from the OUTSIDE in the form of MICROORGANISMS,pollens drugs ,or pollutants are called exogenous antigens.The antigens which are FORMED within the INDIVIDUAL are endogenous antigens.The best examples are group antigens.

Discussion

19470.	Question :Classify air pollutants.
Answer» Solution :AIR pollutants can be • DISCHARGE of dusts or particulate matter (PM: 2.5 and 10) • discharge of gases `(SO_(X), NO_(X), CO and CO_(2))`

Discussion

19471.	Question : Classification of biosynthetic phase or dark reaction as C_(3) & C_(4) is primarily based on :
Answer» INITIAL `CO_(2)` receptor Final `CO_(2)` assimilation First STABLE product Number of ATP get consumed Answer :C

Discussion

19472.	Question : Classial experiment to prove essentially of CO_(2) for photosynthesis was given by
Answer» Arnon Von Moll Calvin et al Hill Solution :Calvin et al while working on CHLORELLA found that carbon dioxide fixes during drak phase of PHOTOSYNTHESIS . 6 molecules of `CO_(2)` combines with 6 RuBP and after a CHAIN of reaction form one molecule of glucose (six calvin CYCLE are required for the production of one glucose molecule)

Discussion

19473.	Question : Classical plant breeding involves
Answer» Hybridization of pure LINES FOLLOWED by ARTIFICIAL selection Artificial selection only Hybridization only Artificial selection followed by hybridization Answer :A

Discussion

19474.	Question : Class to which rabbits belong.
Answer» SOLUTION :MAMMALIA.

Discussion

19475.	Question : Clap
Answer» Is a STD Caused by virus NEISSERIA gonorrhoeae Currently ceftriaxone is the ANTIBIOTIC that most EFFECTIVELY attacks the pathogen of this DISEASE Both (1) and (3) Answer :D

Discussion

19476.	Question : Clamp connection are abserved in:-
Answer» Basidiomycetes Zygomycetes Ascomycetes Oomycetes Answer :A

Discussion

19477.	Question : Clamp connection are abserved in :
Answer» Basidiomycetes Zygomycetes Ascomycetes Oomycetes Answer :A

Discussion

19478.	Question : Citrus canker is a :-
Answer» VIRAL disease bacterial disease fungal disease protozoan disease Answer :B

Discussion

19479.	Question : Cite one common feature and one contrast feature shared between apomixis and parthenocarpy.
Answer» SOLUTION :Common features : FERTILIZATION (Syngamy) is absent in both apomixis and parthenocarpy. Contrast features : Parthenocarpic FRUITS does not develop SEEDS , WHEREAS in apomixis seeds are developed.

Discussion

19480.	Question : Cite two examples of developmental evidence for evolution from plant-kingdom.
Answer» SOLUTION : Ciliated SPERM of GYMNOSPERMS and PROTONEMA of mosses and FERNS

Discussion

19481.	Question : Cite few examples of biomolecules that contain phosphorus.
Answer» SOLUTION :DNA, RNA, ATP and NADP.

Discussion

19482.	Question : Cite an example of an inverted ecological pyramid. What kind of pyramid of energy would it have?
Answer» Solution :(a) PYRAMID of BIOMASS of SEA. (b) Always UPRIGHT.

Discussion

19483.	Question : Cite an example of an inverted ecological pyramid.
Answer» Solution :Pyramid of NUMBER in TREE ECOSYSTEM & pyramid of BIOMASS in sea ecosystem is inverted.

Discussion

19484.	Question : Cite an example of an inverted ecological pyramid. What kind of pyramid of energy would it have ?
Answer» SOLUTION :EXAMPLE :The pyramid of BIOMASS in sea. Kind of pyramid : ENERGY of pyramid is ALWAYS upright.

Discussion

19485.	Question : Cite a case of incomplete dominance. Which trait in such a case has no gene?
Answer» Solution :A CROSS between pure red-flowered and pure white-flowered 4-O.Clock plants shows INCOMPLETE dominance, producing PINK-flowered HYBRIDS, pink FLOWER colour has no specific gene.

Discussion

19486.	Question : Cite an example for partial stem parasite and partial root parasite.
Answer» Solution :(a) Partial STEM parasite - E.g: Loranthus. (B) Partial ROOT parasite - E.g: SANTALUM.

Discussion

19487.	Question : Cirrhosis is caused due to .....
Answer» Bacteria Fungi ADDICTION Virus SOLUTION :Addiction

Discussion

19488.	Question : Cis-trans expression of genes is an example of
Answer» mutation interagenic CROSSING over interagenic crossing over cytoplamsic inheritance Answer :C

Discussion

19489.	Question : Cistron was called as functional gene in 1955 by
Answer» Bateson Waldeyer Benzer Bailing Answer :C

Discussion

19490.	Question : Cistrons, that codes for a polypeptide, in an operon are called
Answer» REGULATOR genes Structural genes Premoter genes Operator genes Answer :B

Discussion

19491.	Question : Circumcission is the procedure of
Answer» Cutting the glans penis . Removal of WHOLE skin of penis . Removal of MOVABLE skin (prepuce) of glans penis Reduction of the BODY PART of penis . Answer :C

Discussion

19492.	Question : Explain Circulatory system of leech.
Answer» SOLUTION :Haemocoelic SYSTEM.

Discussion

19493.	Question : Circular DNA is present in
Answer» E.R. and ribosomes ribosomes and chloroplasts ribosomes and mitochondria mitochondria and chloroplastis Answer :D

Discussion

19494.	Question : Circadian Rhythm is an endogenously driven cycle for biochemical, physiological and behavioral processes. In humans, the approximate duration of this 'biological clock' is -
Answer» 1 Hour 6 Hour 12 Hour 24 Hour Answer :D

Discussion

19495.	Question : Ciliated solid larva is the characteristic feature of
Answer» Scypha Obelia Sycon Hydra Answer :B

Discussion

19496.	Question : Ciliated epithelium lining the trachea and bronchi is advantageous because
Answer» Cilia act as SENSORY hairs Cilia increase the SURFACE AREA of absorption Cilia kill foreign microbes Ciliary MOVEMENT propels the mucus and foreign particle towards the larynx Answer :D

Discussion

19497.	Question : Ciliated epithelium in human body is present in
Answer» Kidney & stomach Trachea & ureter Cavity of BRAIN and FALLOPIAN tube Stomach & URINARY bladder Answer :C

Discussion

19498.	Question : Cigarette smoking leads to a disease called _____
Answer» ANSWER :EMPHYSEMA

Discussion

19499.	Question : Cigarette smoking is injurious to health, comment.
Answer» Solution :Smoking TOBACCO is highly harmful to the body. High CONCENTRATION of Nicotine causes paraltsis of nerve cells. Smoking causes CANCER, ARTERIOSCLEROSIS, emphysema, ETC.

Discussion

19500.	Question : Cigarette smoking increases the risk of
Answer» jaundice emphysema SARS pneumonia ANSWER :B

Discussion

Explore topic-wise InterviewSolutions in .

Question :Classify the following into analogous and homologous organs: Trunk of an elephant and hand of chimpanzee

Question :Classify the following into analogous and homologous organs: Tendril of pea and spines of cactus

Question :Classify the following into analogous and homologous organs: Wing of a bat and wing of an insect

Question :Classify the following into analogous and homologous organs: Nails of humans and claws of animals

Question : Classify the following as examples of homology and analogy-Thorn of Bougainvillea and tendrils of Cucurbits.s

Question : Classify the following as examples of homology and analogy-Hearts of fish and crocodile

Question : Classify the diseases given below into two groups based on the causative organism of each group (Typhoid, Malaria,Diphtheria, Amoebia).

Question : Classify the aquatic biomes of Earth.

Question : Classify soil based on its formation.

Question : Classify restriction enzymes. Mention the function of each.

Question : Classify restriction enzyme based on their mode of action.

Question : Classify plant tissue culture based on the explants used.

Question : Classify nucleic acid based on sugar molecules.

Question : Classify mutations based on the effect on translation.

Question : Classify degradable pollutants.

Question : Classify gene interactions with an example.

Question : Classify cross over.

Question : Classify animal breeding based on time.

Question : Classify antigens based on origin.

Question :Classify air pollutants.

Question : Classification of biosynthetic phase or dark reaction as C_(3) & C_(4) is primarily based on :

Question : Classial experiment to prove essentially of CO_(2) for photosynthesis was given by

Question : Classical plant breeding involves

Question : Class to which rabbits belong.

Question : Clap

Question : Clamp connection are abserved in:-

Question : Clamp connection are abserved in :

Question : Citrus canker is a :-

Question : Cite one common feature and one contrast feature shared between apomixis and parthenocarpy.

Question : Cite two examples of developmental evidence for evolution from plant-kingdom.

Question : Cite few examples of biomolecules that contain phosphorus.

Question : Cite an example of an inverted ecological pyramid. What kind of pyramid of energy would it have?

Question : Cite an example of an inverted ecological pyramid.

Question : Cite an example of an inverted ecological pyramid. What kind of pyramid of energy would it have ?

Question : Cite a case of incomplete dominance. Which trait in such a case has no gene?

Question : Cite an example for partial stem parasite and partial root parasite.

Question : Cirrhosis is caused due to .....

Question : Cis-trans expression of genes is an example of

Question : Cistron was called as functional gene in 1955 by

Question : Cistrons, that codes for a polypeptide, in an operon are called

Question : Circumcission is the procedure of

Question : Explain Circulatory system of leech.

Question : Circular DNA is present in

Question : Circadian Rhythm is an endogenously driven cycle for biochemical, physiological and behavioral processes. In humans, the approximate duration of this 'biological clock' is -

Question : Ciliated solid larva is the characteristic feature of

Question : Ciliated epithelium lining the trachea and bronchi is advantageous because

Question : Ciliated epithelium in human body is present in

Question : Cigarette smoking leads to a disease called _____

Question : Cigarette smoking is injurious to health, comment.

Question : Cigarette smoking increases the risk of