24277 + Interview Questions in Biology in Class 12 Page 237 InterviewSolution

11801.	Question :Name the pioneer species on a bare rock. How do they help in establishing the next type of vegetation? Mention the type of climax community that will ultimately . get established
Answer» Solution :The PIONEER species on a bare rock are usually lichens. The lichens secrete acids to dissolve rocks which help in weathering and FORMATION of small amount of soil. Now these suitable conditions help inestablishing small plants like bryophytes. They are, with time, succeeded by bigger plants, and after several more stages, ultimately -a CLIMAX COMMUNITY forest is established

Discussion

11802.	Question : Name the plant family to which the coffee plant belong to?
Answer» ANSWER :RUBIACEAE

Discussion

11803.	Question : Name the pioneers of primary succession in water.
Answer» SOLUTION :PHYTOPLANKTON.

Discussion

11804.	Question : name the pigment(s) which increases the absorption range for photosynthesis.
Answer» ANSWER :CHLOROPHYLL B, XANTHOPHYLLS and CAROTENOIDS

Discussion

11805.	Question : Name the pioneer species in primary succession on rocks and primary succession in water
Answer» Solution :LICHENS are the pioneer species on ROCK they secrete some ACIDS to DISSOLVE rock and help in weathering and soil formation. PHYTOPLANKTONS are the pioneer species in water.

Discussion

11806.	Question : Name the physical and physiological connection between maternal body and embryo (foetus).
Answer» SOLUTION :PLACENTA

Discussion

11807.	Question : Name the phylum and disease caused by Wuchereria bancrofti.
Answer» SOLUTION :NEMATHELMINTHES, ELEPHANTIASIS

Discussion

11808.	Question : Parthenogenesisis the development of the unfertilized female gamete into an embryo. If so what is parthenocarpy ?
Answer» Solution :Parthenogenesis is the PHENOMENON where the UNFERTILIZED FEMALE gamete (EGG) develops into a new individual. e.g Turkey

Discussion

11809.	Question : Name the phenomenon that converts glucose into glycogen.
Answer» ANSWER :GLYCOGENESIS

Discussion

11810.	Question : Name the phenomenon of the reversion of mature cells to the meristematic state.
Answer» Redifferentiation Dedifferentiation Totipotency Differentiation Answer :A::B::D

Discussion

11811.	Question : Name the phenomenon by which 'rapid speciation' can take place.
Answer» SOLUTION :By POLYPLOIDY

Discussion

11812.	Question : Name the person who proposed that population tends to increase geometrically while food productionsupply arithmetically.
Answer» SOLUTION :THOMAS MALTHUS.

Discussion

11813.	Question : Name the pathogen which causes maligant malaria.
Answer» SOLUTION :PLASMODIUM FALCIPARUM.

Discussion

11814.	Question : Name the pathogen which causes malignant malaria.
Answer» SOLUTION :PLASMODIUM FALCIPARUM.

Discussion

11815.	Question : Name the pathogen, vector and symptom of malaria.
Answer» <P> Solution :Plasmodium VIVAX, P. malariae and P. falciparum. Vector : Female anopheles mosquito. SYMPTOMS : Recurrent HIGH fever and chills for 3 to 4 days.

Discussion

11816.	Question : Name the parts 'X' and 'Y' of the transcription unit given below.
Answer» SOLUTION :X TEMPLATE STRAND, Y- TERMINATOR.

Discussion

11817.	Question : Name the parts of pistil which develop into fruit and seeds
Answer» SOLUTION :Pistil is a female reproductive organ which obtains pollen grain to MAKE possible the fertillsation of EGG cell located in ovary that goes towards ovary from style towards lower DIRECTION ovary has ovules that has an egg cell. Ovary gets converted into fruit and ovules GET converted into seeds

Discussion

11818.	Question : Name the parts of an angiosperm flower in which development of male and female gametophyte take place
Answer» SOLUTION :In angiospermic plants, flowers STAMEN and pistil are MALE and female reproductive organs respectively. MICROSPORES are produced in stamen in which male GAMETOPHYTES are developed. Megaspores are produced in pistil in which female gametophyte is developed

Discussion

11819.	Question : Name the parts of an angiosperm flower in which development of male and female gametophyte takes place .
Answer» SOLUTION :Pollen grain is the starting POINT of male gametophytic GENERATION . After pollination the pollen grains gerniate to produce male gametes or sperms . Female gametophyte or embryo sac is developed INSIDE the OVULE in the nucleus.

Discussion

11820.	Question : Namethepartsof a pistil and write any one function of each.
Answer» SOLUTION :OVARY , styleand STIGMA

Discussion

11821.	Question : Name the parts marked 'A' and 'B' in the given transcription unit.
Answer» SOLUTION : A - PROMOTER siteB- STRUCTURAL GENE

Discussion

11822.	Question : Name the parts formed in human embryo aftera. one month ,b. second month ,c. third month , d.fifth month
Answer» Solution :a.Heart b.LIMBS and digits c. Limbs and GENITAL organs d. APPEARANCE of HAIR on HEAD .

Discussion

11823.	Question : Name the particular technique in biotechnology whose steps are shown in the figure . Use the figure to sum - marise the techique in three steps .
Answer» Solution :This technique is CALLED cloning. There are three basic steps tomodify an organism genetic-cally . i. Identification of DESIRED gene in human DNA. ii. INTRODUCTIONOF the identified DNA into a vec-tor namely plasmid . iii. Introduction of this recombinant DNA into a HOST namely E. COLI.

Discussion

11824.	Question : Name the part of the brain completely convered by cerebral hemispheres.
Answer» SOLUTION :DIENCEPHALON is COMPLETELY COVERED by cerebal HEMISPHERES.

Discussion

11825.	Question : Name the part of pollen grains responsible for preserving them as fossils
Answer» GERM pore Intine Exine Gametes Answer :C

Discussion

11826.	Question : Name the part of nephron that plays role of countercurrent multiplier.
Answer» ANSWER :HENLE's LOOP

Discussion

11827.	Question : Name the part of gynoecium that determines the compatible nature of pollen grain
Answer» Solution :Pistil has the capacity to recognize suitable (Right type) or not suitable (Wrong Type) type of pollen GRAIN. The pollen grain is right type then pistil accepts the pollen and promotes post-pollination events that LEADS to fertilisation. If the pollen is of the wrong type pistil rejects the pollen. The ABILITY of pistil to recognise the pollen followed by its ACCEPTANCE or rejection is the result of a continuous dialogue between pollen grain and pistil. This dialogue is mediated by chemical COMPONENTS of the pollen grain interacting with those of the pistil.

Discussion

11828.	Question : Name the parts of an angiosperm flower in which development of male and female gametophyte takes place.
Answer» Solution :MALE GAMETOPHYTE DEVELOPS in the anthers of the stamens and FEMALE gametophyte develops in the ovule present in the carpels of the flower.

Discussion

11829.	Question : Name the part analogous to penis seen in female reproductive system.
Answer» SOLUTION :CLITORIS (HIGHLY SENSITIVE ORGAN)

Discussion

11830.	Question : Name the ovarian hormones and give functions of any one of them.
Answer» SOLUTION :Progesterone, OESTROGENS, CONTROL release of egg and MENSTRUAL cycle

Discussion

11831.	Question : Name the other plant which shows similar type of inheritance. Give the scientific name.
Answer» SOLUTION :FOUR O.Clock -MIRABILIS JALAPA.

Discussion

11832.	Question : Name the organisms which prepare their own food.
Answer» ANSWER :AUTOTROPHS

Discussion

11833.	Question : Name the organs developed from embryonic ectoderm.
Answer» SOLUTION :BRAIN and spinal CORD (CNS), peripheral nervous system (PNS), epidermis and its derivatives and mammary glands.

Discussion

11834.	Question : Name the organisms that have comb plates.
Answer» ANSWER :CTENOPHORA,

Discussion

11835.	Question : Name the organism that fixes nitrogen in symbiotic association with a water fern. Where does it live in such plants?
Answer» Solution : Anabaena azollae. It GROWS as symbiont WITHIN the cavities formed in the UPPER lobes of the aerial chlorophyllous LEAVES of Azolla.

Discussion

11836.	Question :Name the organism commercially used for the production of single cell protein
Answer» SOLUTION :SPIRULINA

Discussion

11837.	Question : Name the organism and enzyme which bring aboutalcoholic fermentation of sucrose.
Answer» SOLUTION :The organism and the ENZYME which bring about the alcoholic fermentation of SUCROSE are yeast and zymase RESPECTIVELY.

Discussion

11838.	Question : Name the organ that exhibits positive geotropism:
Answer» Stem Root Leaf Flower Answer :B

Discussion

11839.	Question : Name the opening between two vocal cords.
Answer» ANSWER :RIM glottidis

Discussion

11840.	Question : Name the nuclei involved in triple fusion.
Answer» Solution :Three haploid nuclei are involved in triple FUSION which are one male nucleus in the male gamete and TWO free haploid polar nuclei in the central CELL.

Discussion

11841.	Question : Name the nuclei taking part in triple fusion.
Answer» Solution :The NUCLEUS of the MALE gamete and the secondary nucleus TAKE PART in TRIPLE fusion.

Discussion

11842.	Question : Name the Nobel Laureate regarded as the father of Green revolution.
Answer» SOLUTION :NORMAN E. Borlaug is regarded as the father of Green REVOLUTION.

Discussion

11843.	Question : Name the new breed produced in Punjab by crossing Bikaneri ewes and Marino rams
Answer» SOLUTION :HISARDALE

Discussion

11844.	Question : Name the nematode which injects the roots of tobacco plants and wastreated with the help of RNA interference.
Answer» SOLUTION :Meloidegyne incognitia

Discussion

11845.	Question : Name the neurotransmitters that decrease and increase the heart rate in human beings respectively.
Answer» Solution :Acetylcholine DECREASES heart rate and adrenaline INCREASES the heart rate in HUMAN BEINGS.

Discussion

11846.	Question : Name the nematode that attacks roots of tobacco plant.
Answer» SOLUTION :Meloidogyne INCOGNITA

Discussion

11847.	Question : Name the naturalist who put forward the theory of natural selection along with Darwin.
Answer» SOLUTION :WALLACE

Discussion

11848.	Question : Name the National Parks famous for a. Tiger b. One horned Rhinoceros c. Lion tailed monkey d. Nilgiri Tahr e. Asiatic lion
Answer» SOLUTION :`{:("a.","TIGER","Corbett NATIONAL Park"),("b.","One horned Rhinoceros","Kaziranga National Park"),("c.","Lion TAILED monkey","Silent Valley National Park"),("d.","Nilgiri TAHR","Eravikulam National Park"),("e.","Asiatic lion","Gir National Park"):}`

Discussion

11849.	Question : Name the muscular and the glandular layers of human uterus. Which one of these layers undergoes cyclic changes during menstrual cycle? Name the hormone essential for the maintenance of this layer.
Answer» SOLUTION :(a) MYOMETRIUM and ENDOMETRIUM respectively, (b) Endometrium, ( c) PROGESTERONE.

Discussion

11850.	Question : Name the muscular portion that separates thoracic cavity from abdominal cavity.
Answer» ANSWER :DIAPHRAGM

Discussion

Explore topic-wise InterviewSolutions in .

Question :Name the pioneer species on a bare rock. How do they help in establishing the next type of vegetation? Mention the type of climax community that will ultimately . get established

Question : Name the plant family to which the coffee plant belong to?

Question : Name the pioneers of primary succession in water.

Question : name the pigment(s) which increases the absorption range for photosynthesis.

Question : Name the pioneer species in primary succession on rocks and primary succession in water

Question : Name the physical and physiological connection between maternal body and embryo (foetus).

Question : Name the phylum and disease caused by Wuchereria bancrofti.

Question : Parthenogenesisis the development of the unfertilized female gamete into an embryo. If so what is parthenocarpy ?

Question : Name the phenomenon that converts glucose into glycogen.

Question : Name the phenomenon of the reversion of mature cells to the meristematic state.

Question : Name the phenomenon by which 'rapid speciation' can take place.

Question : Name the person who proposed that population tends to increase geometrically while food productionsupply arithmetically.

Question : Name the pathogen which causes maligant malaria.

Question : Name the pathogen which causes malignant malaria.

Question : Name the pathogen, vector and symptom of malaria.

Question : Name the parts 'X' and 'Y' of the transcription unit given below.

Question : Name the parts of pistil which develop into fruit and seeds

Question : Name the parts of an angiosperm flower in which development of male and female gametophyte take place

Question : Name the parts of an angiosperm flower in which development of male and female gametophyte takes place .

Question : Namethepartsof a pistil and write any one function of each.

Question : Name the parts marked 'A' and 'B' in the given transcription unit.

Question : Name the parts formed in human embryo aftera. one month ,b. second month ,c. third month , d.fifth month

Question : Name the particular technique in biotechnology whose steps are shown in the figure . Use the figure to sum - marise the techique in three steps .

Question : Name the part of the brain completely convered by cerebral hemispheres.

Question : Name the part of pollen grains responsible for preserving them as fossils

Question : Name the part of nephron that plays role of countercurrent multiplier.

Question : Name the part of gynoecium that determines the compatible nature of pollen grain

Question : Name the parts of an angiosperm flower in which development of male and female gametophyte takes place.

Question : Name the part analogous to penis seen in female reproductive system.

Question : Name the ovarian hormones and give functions of any one of them.

Question : Name the other plant which shows similar type of inheritance. Give the scientific name.

Question : Name the organisms which prepare their own food.

Question : Name the organs developed from embryonic ectoderm.

Question : Name the organisms that have comb plates.

Question : Name the organism that fixes nitrogen in symbiotic association with a water fern. Where does it live in such plants?

Question :Name the organism commercially used for the production of single cell protein

Question : Name the organism and enzyme which bring aboutalcoholic fermentation of sucrose.

Question : Name the organ that exhibits positive geotropism:

Question : Name the opening between two vocal cords.

Question : Name the nuclei involved in triple fusion.

Question : Name the nuclei taking part in triple fusion.

Question : Name the Nobel Laureate regarded as the father of Green revolution.

Question : Name the new breed produced in Punjab by crossing Bikaneri ewes and Marino rams

Question : Name the nematode which injects the roots of tobacco plants and wastreated with the help of RNA interference.

Question : Name the neurotransmitters that decrease and increase the heart rate in human beings respectively.

Question : Name the nematode that attacks roots of tobacco plant.

Question : Name the naturalist who put forward the theory of natural selection along with Darwin.

Question : Name the National Parks famous for a. Tiger b. One horned Rhinoceros c. Lion tailed monkey d. Nilgiri Tahr e. Asiatic lion

Question : Name the muscular and the glandular layers of human uterus. Which one of these layers undergoes cyclic changes during menstrual cycle? Name the hormone essential for the maintenance of this layer.

Question : Name the muscular portion that separates thoracic cavity from abdominal cavity.