22339 + Interview Questions in Biology in Class 11 Page 201 InterviewSolution

10001.	Question : The plant hormone ___________ leads toclosing of stomata.
Answer» SOLUTION :abscisic ACID

Discussion

10002.	Question : The plant group that produces spores and embryo but lacks vascular tissues and seeds is
Answer» Pteridophyta Rhodophyta Bryophyta Phaeophyta Answer :C

Discussion

10003.	Question : The plant group in which sporophytes generation is represented by zygote only
Answer» Algae/Chlamydomonas/Ulothrix Bryophyte/Moss/Liverwords Pteridophyte/Ferm/Selaginella Gymnosperm/Cycas/Pinus Solution :The PLANT group in which SPOROPHYTE generation is REPRESENTED by zygote only algae/chalmydomoas/Ulothrix.

Discussion

10004.	Question : The plant cell cytoplasm is surrounded by both cell wall and cell membrane. The specificty of transport of transport of substances is mostly across the cell membrane, because
Answer» CELL MEMBRANE is impermeable cell membrane is selectivelypermeable cell membrane is FULLY permeable cell WALL is impermeable Answer :B

Discussion

10005.	Question : The plant cell's central vacuole :
Answer» provides the PLANT CELL with support stores NUTRIENTS and cellular waste products is a RESERVOIR for water all of the above Answer :D

Discussion

10006.	Question : The plant cell cytoplasm is surrounded by both cell wall and cell membrane. The specificity of transport of substances are mostly across the cell membrane, because ........
Answer» Solution :Substances are transported by cell membrane because cell membrane is a semipermeable membrane which has two layered membrane of LIPID between protein and CARBOHYDRATE. Substances soluble in lipids diffuse through the membrane faster but porins are there for other SMALL sized molecules. Holes are MADE up of protein. While cell wall does not help molecules to pass through. Because cell wall is non-living and HARD in structure, If gives mechanical strength and protection from bacteria and damage to the cell.

Discussion

10007.	Question : The plant body of the brown algae is attched to the substratum by
Answer» HOLDFAST Stipe Stalk Front Solution :The PLANT BODY of the brown algae is ATTACHED to the substratum by holdfast.

Discussion

10008.	Question : The plant body of moss (Funaria) is
Answer» COMPLETELY SPOROPHYTE Predominantly sporophyte with GAMETOPHYTE Completely gametophyte Predominantly gametophyte with sporophyte. Answer :D

Discussion

10009.	Question : The plant body of bryophytes is .......... It produces ......... hence called as ......... The male sex organ is called ......... They produces .......... antherozoids.
Answer» SOLUTION :haploid, GAMETES, gametophyte, antheridium, biflagellate

Discussion

10010.	Question : The plant body in liverwort is ..........
Answer» SOLUTION :THALLOID

Discussion

10011.	Question : The plant body in higher plants is well differentiated andwell developed. Roots are the organs used for the purpose of absorption. What is the equivalent of roots in the less developed lower plants?
Answer» SOLUTION :RHIZOIDS

Discussion

10012.	Question : The plant body in higher plants is well differentiated and well developed. Roots are the organs used for the purpose of absorption. What is the equivalent of roots in the less developed lower plants ?
Answer» Solution :In lower PLANTS like bryophytes and pteridophytes are less developed plants, Rhizoids structures in place of roots are present. In these plants unlike PLANT tissue system/ higher plants (GYMNOSPERMS and angiosperms LEAVES, STEM and roots are not differentiated.

Discussion

10013.	Question : The plahts adapted to dry tropical regions have C_(3) // C_(4) pathway.
Answer» ANSWER :`C_(4)` PATHWAY

Discussion

10014.	Question : The places of first, second and third moulting of Ascaris larva are
Answer» SOIL, ALVEOLI, LUNG liver, soil, stomach soil, lung, liver soil, INTESTINE, lung Answer :B

Discussion

10015.	Question : The placenta is attached to the developing seed near the
Answer» TESTA Hilum Micropyle Chalaza Solution :Placenta is an attachment with OVULE developing near hilum. It is a blot type structure at the margin of seed. From stalk of egg, seed explodes. Means it is a structure attaching fruit wall and placentažother options are wrong. Testa is the outermost LAYER. Micropyle is the smallest pore in seed coats through which water enters into seed and chalaza is such a tissue where nucleus and INTEGUMENTS are attached. Mineral are transported to nucleus from plants by VASCULAR tissues outer integument, chalaza etc.

Discussion

10016.	Question : The pivot joint between atlas and axis is a type of ......
Answer» CARTILAGINOUS JOINT SYNOVIAL joint saddle joint fibrous joint Solution :synovial joint

Discussion

10017.	Question : The pituitary gland is located in the bony cavity of the sphenoid bone called.......
Answer» SOLUTION :(SELLA turcica)

Discussion

10018.	Question : The pituitary gland is controlled by the .......
Answer» SOLUTION :(HYPOTHALAMUS )

Discussion

10019.	Question : The pineapple which under natural condition is difficult to blossom has been made to produce fruits throughout the year by application of
Answer» NAA, 2,4-D phenyl ACETIC acid cytokinin none of these Answer :A

Discussion

10020.	Question : The pituitary gland is connected to the hypothalamus by a stalk called .......
Answer» SOLUTION :(INFUNDIBULUM )

Discussion

10021.	Question : The pineal gland secretes.............. which plays a central role in the regulation of circadian rhythm of our body
Answer» SOLUTION :(MELATONIN)

Discussion

10022.	Question : The pineal body secretes the hormone ……………….... which regulates sleep and wake cycle.
Answer» SOLUTION :MELATONIN

Discussion

10023.	Question : The pigments phycocyanin and phycoerythrin are present in
Answer» bacillariophyceae CHLOROPHYCEAE EUBACTERIA CYANOBACTERIA

Discussion

10024.	Question : The pigment which protects earthworm from UV rays
Answer» HAEMOGLOBIN CHLOROCRUORIN VANADIUM chromogen Porphyrin Answer :D

Discussion

10025.	Question : The pigment present in the nodules of rhizobium-legume complex is known as ................................
Answer» SOLUTION :LEGHAEMOGLOBIN

Discussion

10026.	Question : The pigment present in the muscle fibre to store oxygen is
Answer» MYOGLOBIN TROPONIN myosin actin Solution :myoglobin

Discussion

10027.	Question : The pigment present in red blood cells.
Answer» SOLUTION :HAEMOGLOBIN

Discussion

10028.	Question : The pigment present in green sulphur bacteria is …………..
Answer» BACTERIOVIRIDIN bacteriochlorophyll chlorophyll a xanthophyll Answer :B

Discussion

10029.	Question : The pigment concerned with various photomorphogenetic processes in plant has
Answer» Open tetrapyrrolic structure Absorption SPECTRA different from that of chlorophyll POSITIVE EFFECTS on MEMBRANE permeability All of these Answer :C

Discussion

10030.	Question : The pigment haemocyanin is found in …………………. .
Answer» Mollusca CHORDATE ECHINODERMATA Annelida Solution :Chordate

Discussion

10031.	Question : The picture given below is an organelle of plantcell . Identifythe pictureand answer then questions . (a) Namethe organelle . (b)Mention the roleof the organelle in the cell . (c)How do you call the stackof coin like structures presenton it ? (d) Whetherisshows semi - autonomy ?If yes how ? If no ,why ?
Answer» Solution :(a) Chlorophlast . (b) Chlorophast in the site of PHOTSYNTHESIS. (c) Grana made of thylakoids . (d)YES, prsence of DNA , 70S ribsosomesgivesthemthe status of SEMI - autonomy .

Discussion

10032.	Question : The photosynthetic protists are
Answer» Euglenoids, DIATOMS and DINOFLAGELLATES CILIATES, zooflagellates and dinoflagellates Sarcodines, dinoflagellates and slime moulds Sarcodines, dinoflagellates and euglenoids ANSWER :A

Discussion

10033.	Question : The phylogenetic tree of animals shows that:
Answer» cnidaria EVOLVED from sponges flatworms evolved from ROUNDWORMS both sponges and cnidaria evolved from protoctista all of the above Solution :both sponges and cnidaria evolved from protoctista

Discussion

10034.	Question : The photosynthetic units are called as____
Answer» Oxysomes QUANTOSOMES Thylakoids Chloroplasts Solution :Quantosomes

Discussion

10035.	Question : The photosynthetic pathway is represented in a schematic representation. Mark the correct option.
Answer» It represents CACTUS plants where A occurs in the mesophyll & B in the bundle SHEATH cells It represents sugarcane plants where A occurs in the mesophyll & B in the bundle sheath cells It represents PINEAPPLE plants where both A & B occurs in the mesophyll cells It represents maize plants where A & B are separated only TEMPORARILY Solution :It represents maize plants where A & B are separated only temporarily

Discussion

10036.	Question : The photosynthetic part of periderm that lies inner to phellogen is
Answer» Phelleum Wood Periderm Phelloderm Answer :D

Discussion

10037.	Question : The photoreceptors of cockroach are
Answer» compound EYES only FENESTRAE both 1 & 2 none of the above Answer :C

Discussion

10038.	Question : The photoperiod in plants is perceived at
Answer» MERISTEM FLOWER FLORAL buds LEAVES SOLUTION :Leaves

Discussion

10039.	Question : The phloem formed from vascular cambium is known as
Answer» PRIMARY PHLOEM SECONDARY phloem protophloem metaphloem Answer :B

Discussion

10040.	Question : The phenomenon of water moving out of cell an plasma membrane shrinking from the cell wall is :
Answer» Plasmolysis Exosmosis Hydrolysis Endomosis Answer :A

Discussion

10041.	Question : The phenomenon of uptake of water at expense of energy by the cell and usually against osmotic gradient is known as ……………………………………….
Answer» SOLUTION :ACTIVE ABSORPTION

Discussion

10042.	Question : The phenomenon of torsion occurs in :
Answer» Gastropoda Pelecypoda Cephalopoda Amphineurs Answer :A

Discussion

10043.	Question :The phenomenon of pollen tube entering the ovule laterally through integuments is called
Answer» MESOGAMY APOGAMY chalazogamy vegetative fertilization Answer :A

Discussion

10044.	Question : The phenomenon of plasmolysis is evident when cells are kept in:
Answer» HYPOTONIC solution Hypertonic solution Isotonic solution None of these Answer :B

Discussion

10045.	Question : The phenomenon of heterophylly is
Answer» maturation plasticity vernalization elasticity ANSWER :B

Discussion

10046.	Question : The phase reversel property of cytoplasmic matrix induces
Answer» Osmosis Plasmolysis Cyclosis Deplasmolysis ANSWER :C

Discussion

10047.	Question : The phase I of the cardiac cycle is called..........
Answer» SOLUTION :VENTRICULAR DIASTOLE.

Discussion

10048.	Question : The pH of the digestive juices within the human small intestine is between 7.5 and 8.5. This environment is slightly
Answer» basic acidic neutral None of these Answer :A

Discussion

10049.	Question : The pH of protoplasm is around___
Answer» 6.6 6.7 6.8 6.9 Solution :6.8

Discussion

10050.	Question : The pH of human urine is approximately
Answer» 6.5 7 6 7.5

Discussion

Explore topic-wise InterviewSolutions in .

Question : The plant hormone ___________ leads toclosing of stomata.

Question : The plant group that produces spores and embryo but lacks vascular tissues and seeds is

Question : The plant group in which sporophytes generation is represented by zygote only

Question : The plant cell cytoplasm is surrounded by both cell wall and cell membrane. The specificty of transport of transport of substances is mostly across the cell membrane, because

Question : The plant cell's central vacuole :

Question : The plant cell cytoplasm is surrounded by both cell wall and cell membrane. The specificity of transport of substances are mostly across the cell membrane, because ........

Question : The plant body of the brown algae is attched to the substratum by

Question : The plant body of moss (Funaria) is

Question : The plant body of bryophytes is .......... It produces ......... hence called as ......... The male sex organ is called ......... They produces .......... antherozoids.

Question : The plant body in liverwort is ..........

Question : The plant body in higher plants is well differentiated andwell developed. Roots are the organs used for the purpose of absorption. What is the equivalent of roots in the less developed lower plants?

Question : The plant body in higher plants is well differentiated and well developed. Roots are the organs used for the purpose of absorption. What is the equivalent of roots in the less developed lower plants ?

Question : The plahts adapted to dry tropical regions have C_(3) // C_(4) pathway.

Question : The places of first, second and third moulting of Ascaris larva are

Question : The placenta is attached to the developing seed near the

Question : The pivot joint between atlas and axis is a type of ......

Question : The pituitary gland is located in the bony cavity of the sphenoid bone called.......

Question : The pituitary gland is controlled by the .......

Question : The pineapple which under natural condition is difficult to blossom has been made to produce fruits throughout the year by application of

Question : The pituitary gland is connected to the hypothalamus by a stalk called .......

Question : The pineal gland secretes.............. which plays a central role in the regulation of circadian rhythm of our body

Question : The pineal body secretes the hormone ……………….... which regulates sleep and wake cycle.

Question : The pigments phycocyanin and phycoerythrin are present in

Question : The pigment which protects earthworm from UV rays

Question : The pigment present in the nodules of rhizobium-legume complex is known as ................................

Question : The pigment present in the muscle fibre to store oxygen is

Question : The pigment present in red blood cells.

Question : The pigment present in green sulphur bacteria is …………..

Question : The pigment concerned with various photomorphogenetic processes in plant has

Question : The pigment haemocyanin is found in …………………. .

Question : The photosynthetic protists are

Question : The phylogenetic tree of animals shows that:

Question : The photosynthetic units are called as____

Question : The photosynthetic pathway is represented in a schematic representation. Mark the correct option.

Question : The photosynthetic part of periderm that lies inner to phellogen is

Question : The photoreceptors of cockroach are

Question : The photoperiod in plants is perceived at

Question : The phloem formed from vascular cambium is known as

Question : The phenomenon of water moving out of cell an plasma membrane shrinking from the cell wall is :

Question : The phenomenon of uptake of water at expense of energy by the cell and usually against osmotic gradient is known as ……………………………………….

Question : The phenomenon of torsion occurs in :

Question :The phenomenon of pollen tube entering the ovule laterally through integuments is called

Question : The phenomenon of plasmolysis is evident when cells are kept in:

Question : The phenomenon of heterophylly is

Question : The phase reversel property of cytoplasmic matrix induces

Question : The phase I of the cardiac cycle is called..........

Question : The pH of the digestive juices within the human small intestine is between 7.5 and 8.5. This environment is slightly

Question : The pH of protoplasm is around___

Question : The pH of human urine is approximately