22339 + Interview Questions in Biology in Class 11 Page 262 InterviewSolution

13051.	Question : Plants require water for their survival. But when watered excessively, plants die. Discuss.
Answer» SOLUTION :Plants use water for various metabolic activities like photosynthesis, transpiration and RESPIRATION, while if more water is provided to PLANT then it dies. Because EXCESS water removes air filled between soil-particles. So roots of the plant can.t get oxygen for respiration. Once the CELLS of root die then absorption of water and mineral elements stops. As a result gradually the plant dies.

Discussion

13052.	Question : Plants require nutrients. If we supply these in excess will it be beneficial to plant if yes, how? If no, why?
Answer» SOLUTION :No, excess SUPPLY of nutrients is not advised for healthy growth of plants. Due to the fact that increased CONCENTRATION of nutrients MAY lead to the toxicity of particular mineral which prevents that uptake of other minerals and ALSO affect various other metabolic activities of the cell, leading to the poor growth of plant.

Discussion

13053.	Question : Plants requiring exposure to light for less than critical period in order to flower are called
Answer» LONG DAY PLANTS day NEUTRAL plants intermediate day plants short day plants.

Discussion

13054.	Question : Plants require sulphur for
Answer» ATP synthesis protein synthesis glucose synthesis DNA replication Answer :B

Discussion

13055.	Question : Plants produce embryo and spores but lacks seed and vascular tissue belongs to
Answer» Bryophyta Pteridophyta Gymnosperm Angiosperm Solution :Plants produce EMBRYO and SPORES but lacks SEED and vascular TISSUE BELONGS to bryophyta.

Discussion

13056.	Question : Plants reproducing by spores such as mosses and ferns are grouped under the general term
Answer» CRYPTOGAMS BRYOPHYTES SPOROPHYTES THALLOPHYTES ANSWER :A

Discussion

13057.	Question : Plants of this group are diploid and well adapted to extreme conditions. They grow bearing sporophylls in compact structures called cones. The group in reference is
Answer» Monocots Dicots Pteridophytes Gymnosperms Solution :Gymnosperms INCLUDE medium sized trees or tall trees and shrubs. The leaves of these plants are well adapted to withstand extreme of temperature, humidity, ETC. Reproductive organs are usually in the FORM of cone on strobili. •Male cone produces Microsporophyll and female cone produces Megasporophyll. But seeds are produced from ovule and they are not covered. •Other examples are INCORRECT because monocot, dicot are angiospemic plants. They POSSESS developed enclosed seeds. While in pteridophytes there are no microporophyll and they are not adapted to above shown conditions.

Discussion

13058.	Question : Plants of this group are diploid and well adapted to extreme conditions. They grow bearing sporophylls in compact structres called cones. The group in reference is
Answer» MONOCOTS Dicots Pteridophytes GYMNOSPERMS ANSWER :D

Discussion

13059.	Question : Plants lose water by the process of___________ and____________ .
Answer» SOLUTION :TRANSPIRATION, GUTTATION

Discussion

13060.	Question : Plants living in hot humid environment are
Answer» `C_(3)` plants CAM plants `C_(4)` plants All of the above Solution :Plants living in HOT HUMID ENVIRONMENT are `C_(4)` plants.

Discussion

13061.	Question : Plants like clover and beans, that have nitrogen-fixing bacteria in their roots, belong to the family :
Answer» Fabaceae Brassicaceae Solanaceae Asteraceae Answer :A

Discussion

13062.	Question : Plants growing on the water surface are ealled as …………………. type of aquatic plants.
Answer» EMERGENT submerged submerged Free floating MANGROVES Solution :mangroves

Discussion

13063.	Question : Plants growing in swamps have roots that grow vertically upwards like conical spikes and have aerating pores. Such roots are called
Answer» PNEUMATOPHORES mycorrhizal CONICAL ASSIMILATORY.

Discussion

13064.	Question : Plants growing emergent in marshy saline habitat are called as …………………. plants.
Answer» FREE floating submerged EMERGENT MANGROVES Solution :mangroves

Discussion

13065.	Question : Plants die when over fertilized because the fertilizer
Answer» Damages the WALL of DELICATE root hairs Blocks ABSORPTION of nitrogenous ions Causes dehydration of plants by exosmosis Upsets SOIL environment by poisoning Answer :C

Discussion

13066.	Question : Plants cultivated in nutrient solution without soil is called
Answer» SOMATIC hybbridization tissue culture hydroponics suspension culture Answer :C

Discussion

13067.	Question : Plants can be grown in
Answer» SOIL with essential nutrients WATER with essential nutrients either water or soil with essential nutrients water or soil WITHOUT essential nutrients Solution :either water or soil with essential nutrients

Discussion

13068.	Question : Plants are large organisms.
Answer» Solution :Due to PRESENCE of MERISTEMS, GROWTH is unlimited throughout the LIFE.

Discussion

13069.	Question : Plants are highly adaptable to the environment where they survive Opuntia which lives in xeric condition shows phylloclade adaptation.Which part of Opuntia is modified as phylloclade ? Why does it modify ?
Answer» SOLUTION :In Opuntia, the stem isflattered to LOOK like LEAVES called phylloclade. It is modified to avoid transpirationalloss of WATER.

Discussion

13070.	Question : Plants are autotrophic. Can you think of some plants that are partially heterotrophic ?
Answer» Solution :Plants are generally autotrophic. HOWEVER some plants LIKE Nepenthes (pitcher plant), UTRICULARIA (bladderwort), Venus FLY TRAP and some parasites like cuscuta are example of partially heterotrophic plants. They supplement their nitrogen requirement by capturing and digesting insects.

Discussion

13071.	Question : Plants are believed to have evolved from the :
Answer» euglenophytes, because they have chlorophyll a and b dinoflagellates, because they have similar storage products and cellulosic cell walls CHLOROPHYTES, because of SIMILARITIES in chloroplasts and accessory pigments rhodophytes, because they have CAROTENOIDS and use floridean STARCH as a storage PRODUCT Solution :chlorophytes, because of similarities in chloroplasts and accessory pigments

Discussion

13072.	Question : Plants and animals both avoid ............
Answer» SOLUTION :PREDATORS

Discussion

13073.	Question : Plants adapted to low light intensity have
Answer» higher RATE of `CO_(2)`fixation than the sun plants more extended ROOT system leaves modified to spines larger photosynthetic unit size than the sun plants Answer :D

Discussion

13074.	Question : Plants absorb minerals in their ...................... form, as found in the soil .
Answer» SOLUTION :IONIC, WATER

Discussion

13075.	Question : Plant X has 2_n=8 chromosomes.sketch the various stages of meiosis in This plant.
Answer» ANSWER :NA

Discussion

13076.	Question : Plants absorb mineral salts from the soil solution through
Answer» A semipermeable membrane into the cytoplasm Perforation at the APEX of root hair cells The cell WALL which is semipermeable None of these Solution :The semipermeable membrane is responsible for absorption of MINERALS SALTS.

Discussion

13077.	Question : Plant viruses generally have
Answer» Singlestranded DNA Double STRANDED RNA Singlestranded RNA Double stranded DNA Answer :C

Discussion

13078.	Question : Plant succession taking place in sandy area is
Answer» halosere xerosere lithosere psammosere Answer :D

Discussion

13079.	Question : Plant species in Botanical garden are grown for
Answer» IDENTIFICATION PURPOSE Ornamental purpose only Commercial purpose None of these ANSWER :A

Discussion

13080.	Question : Plant showing highest number of chromosomes belongs to
Answer» Fungus Algae PTERIDOPHYTE ANGIOSPERM ANSWER :C

Discussion

13081.	Question : Plant photomorphogenetic reactions are media ted by a pigment
Answer» PHYTOCHROME Anthocyanin Cytochrome All the above Answer :A

Discussion

13082.	Question : Plant roots function to
Answer» ANCHOR the plant store the PRODUCTS of PHOTOSYNTHESIS produce HORMONES that stimulate SEM growth all of the above Answer :D

Discussion

13083.	Question : Plant growth substances (PGS) have innumerable practical applications. Name the PGS you should use to (a) Increase yield of sugarcane. (b) Promote lateral shoot growth. (c) Cause sprouting of potato tuber. (d) Inhibit seed germination.
Answer» Solution :(a) GIBBERELLIC acid increases the YIELD of sugarcane. (b) Cytokinin spray on plants promote lateral shoot growth. (c) The effect of ETHYLENE on potato CAUSES its SPROUTING. (d) ABA - Abscisic acid inhibit the seed germination.

Discussion

13084.	Question : Plant in which De vires caused out his experiments on mutation ____
Answer» SOLUTION :OENOTHERA lamarckiana

Discussion

13085.	Question : Plant groups with highest number of cohorts and least number of cohorts in Bentham and Hooker's classification are
Answer» Monochlamydae, Monocotyledonae THALAMIFLORAE, Heteromerae CALYCIFLORAE, Heteromerae Inferae, Thalamiflorae Answer :B

Discussion

13086.	Question : Plant group with largest ovule, largest tree and largest gametes is
Answer» GYMNOSPERM ANGIOSPERM bryophyta pteridophyta Answer :A

Discussion

13087.	Question : Plant family namely convolvulaceae, Solanaceae are included in order A based on B. A & B are respectively.
Answer» Polemoniales, FLORAL CHARACTERS Polemoniales, VEGETATIVE characters Poales, floral characters Poales, vegetative characters ANSWER :A

Discussion

13088.	Question : Plant families like .......... are included in order .........
Answer» SOLUTION :convolvulacae, solanacealed, polymoniales

Discussion

13089.	Question : Plant cells differ from animal cells in having :
Answer» mitochondria cell WALL RIBOSOMES GOLGI BODIES Solution : cell wall

Discussion

13090.	Question : Plant cell and Animal cell
Answer» SOLUTION :

Discussion

13091.	Question : Plant body is a sporophyte with true root, stem and leaves but not flowers in
Answer» BRYOPHYTA Gymnosperms Pteridophyta ALGAE ANSWER :C

Discussion

13092.	Question : Plant body is Mycelium in this kingdom
Answer» Protista Fungi Monera Plantae ANSWER :A

Discussion

13093.	Question : Plant body in Furaria or Bryophyte is
Answer» PREDOMINANTLY GAMETOPHYTE with sporophyte Predominantly sporophyte with gametophyte Completely gametophyte Completely sporophyte Solution :Plant BODY in Funaria or Bryophyte is completely gametophyte.

Discussion

13094.	Question : Plant bend toward the source of light.
Answer» SOLUTION :Shoot APEX show positive phototropism because of DIFFERENTIAL growth caused due to UNEQUAL distribution of auxin.

Discussion

13095.	Question : Plant A in a nutrient medium shows whiptail disease. Plant B in a nutrient medium shows a Little leaf disease. Identify mineral deficiency of plant A and B ?
Answer» Solution :Whiptail DISEASE is due to DEFICIENCY of MOLYBDENUM. LITTLE leaf disease is due to deficiency of zinc.

Discussion

13096.	Question : Plant A and B are tendrillar climbers of Liliaceae. Plant A in its leaf exhibits a character of dicot and plant B has underground horizontal modified stem. Plant A and B respectively are
Answer» SMILAX and COLCHICUM Gloriosa and Smilax PISUM and LATHYRUS Smilax and Gloriosa Answer :D

Discussion

13097.	Question : Plague formed on the teeth are mineral salts of ............... .
Answer» SODIUM MAGNESIUM and MANGANESE POTASSIUM calciumand magnesium SOLUTION :N/A

Discussion

13098.	Question : Planaria posses high capacity of :
Answer» metamorphasis regeneration ALTERNATION of GENERATION bioluminescence ANSWER :B

Discussion

13099.	Question : Placoid scales are found in …………………… .
Answer» REPTILIA BONY FISHES CARTILAGINOUS fishes AMPHIBIANS Solution :cartilaginous fishes

Discussion

13100.	Question :Placentation is parietal in the ovary of
Answer» ARGEMONE MUSTARD Dianthus 1 & 2 ANSWER :D

Discussion

Explore topic-wise InterviewSolutions in .

Question : Plants require water for their survival. But when watered excessively, plants die. Discuss.

Question : Plants require nutrients. If we supply these in excess will it be beneficial to plant if yes, how? If no, why?

Question : Plants requiring exposure to light for less than critical period in order to flower are called

Question : Plants require sulphur for

Question : Plants produce embryo and spores but lacks seed and vascular tissue belongs to

Question : Plants reproducing by spores such as mosses and ferns are grouped under the general term

Question : Plants of this group are diploid and well adapted to extreme conditions. They grow bearing sporophylls in compact structures called cones. The group in reference is

Question : Plants of this group are diploid and well adapted to extreme conditions. They grow bearing sporophylls in compact structres called cones. The group in reference is

Question : Plants lose water by the process of___________ and____________ .

Question : Plants living in hot humid environment are

Question : Plants like clover and beans, that have nitrogen-fixing bacteria in their roots, belong to the family :

Question : Plants growing on the water surface are ealled as …………………. type of aquatic plants.

Question : Plants growing in swamps have roots that grow vertically upwards like conical spikes and have aerating pores. Such roots are called

Question : Plants growing emergent in marshy saline habitat are called as …………………. plants.

Question : Plants die when over fertilized because the fertilizer

Question : Plants cultivated in nutrient solution without soil is called

Question : Plants can be grown in

Question : Plants are large organisms.

Question : Plants are highly adaptable to the environment where they survive Opuntia which lives in xeric condition shows phylloclade adaptation.Which part of Opuntia is modified as phylloclade ? Why does it modify ?

Question : Plants are autotrophic. Can you think of some plants that are partially heterotrophic ?

Question : Plants are believed to have evolved from the :

Question : Plants and animals both avoid ............

Question : Plants adapted to low light intensity have

Question : Plants absorb minerals in their ...................... form, as found in the soil .

Question : Plant X has 2_n=8 chromosomes.sketch the various stages of meiosis in This plant.

Question : Plants absorb mineral salts from the soil solution through

Question : Plant viruses generally have

Question : Plant succession taking place in sandy area is

Question : Plant species in Botanical garden are grown for

Question : Plant showing highest number of chromosomes belongs to

Question : Plant photomorphogenetic reactions are media ted by a pigment

Question : Plant roots function to

Question : Plant growth substances (PGS) have innumerable practical applications. Name the PGS you should use to (a) Increase yield of sugarcane. (b) Promote lateral shoot growth. (c) Cause sprouting of potato tuber. (d) Inhibit seed germination.

Question : Plant in which De vires caused out his experiments on mutation ____

Question : Plant groups with highest number of cohorts and least number of cohorts in Bentham and Hooker's classification are

Question : Plant group with largest ovule, largest tree and largest gametes is

Question : Plant family namely convolvulaceae, Solanaceae are included in order A based on B. A & B are respectively.

Question : Plant families like .......... are included in order .........

Question : Plant cells differ from animal cells in having :

Question : Plant cell and Animal cell

Question : Plant body is a sporophyte with true root, stem and leaves but not flowers in

Question : Plant body is Mycelium in this kingdom

Question : Plant body in Furaria or Bryophyte is

Question : Plant bend toward the source of light.

Question : Plant A in a nutrient medium shows whiptail disease. Plant B in a nutrient medium shows a Little leaf disease. Identify mineral deficiency of plant A and B ?

Question : Plant A and B are tendrillar climbers of Liliaceae. Plant A in its leaf exhibits a character of dicot and plant B has underground horizontal modified stem. Plant A and B respectively are

Question : Plague formed on the teeth are mineral salts of ............... .

Question : Planaria posses high capacity of :

Question : Placoid scales are found in …………………… .

Question :Placentation is parietal in the ovary of

Question : Plants lose water by the process of_ and__ .