22339 + Interview Questions in Biology in Class 11 Page 421 InterviewSolution

21001.	Question :An inflorescence in which flowers arise from different points but reach the same level is
Answer» CATKIN CORYMB Umbel Spadix ANSWER :B

Discussion

21002.	Question : An inflorescence with main axis elongated bearing flowers in a pendulous axis is called
Answer» raceme spike catkin spadix

Discussion

21003.	Question : An inflorescence having sessile bisexual flowers in acropetal succession is
Answer» Spadix Spike CORYMB RACEME ANSWER :B

Discussion

21004.	Question : An increased heart beat is called................
Answer» SOLUTION :TACHYCARDIA

Discussion

21005.	Question : An important difference between C_3 and C_4 plants is photorespiration. Explain how photorespiration occurs in plants.
Answer» SOLUTION :Photorespiration is light dependent oxidation of intermediates of CARBON assimilation which is accompanied by absorption of oxygen and release of carbon DIOXIDE. For mechanism of photorespiration, refer TEXT of this chapter.

Discussion

21006.	Question : An important characteristic that hemichordates share with chordates is
Answer» ABSENCE of notochord VENTRAL tubular nerve Pharynx with gill SLITS Pharynx without gill slits Answer :C

Discussion

21007.	Question : Hemichordates posses the characters of echinoderms and chordates. Write any 3 characters of echinoderms as well as chordates seen in hemichordates.
Answer» Ventral tubular nerve CHORD Pharynx with GILL SLITS Pharynx WITHOUT gill slits Absence of notochord Solution :Ventral tubular nerve chord

Discussion

21008.	Question : State whether the following statement is true or false. An extracellular matrix helps some cells to adhere toneighbouring cells. A. TrueB. False
Answer» ANSWER :TRUE

Discussion

21009.	Question : An exotic breed of poultry is
Answer» Assel Busra Brahma White leghorn Answer :D

Discussion

21010.	Question : An exhausted student was attending a lecture. After 30 minutes or so, he lost interest and he let go with ia tremendous yawn. To his great distress he couldn't his mouth-his lower jaw was locked open. What do you think would have caused it?
Answer» Solution :Some times the JAW remains OPEN and does not CLOSE after yawning. This is due to dislocation of temporomandibular joint LOCATED between the temporal bone and MANDIBLE (hinge joint).

Discussion

21011.	Question : An excretorysystem is absent in
Answer» ARTHROPODS MOLLUSCS ANNELIDS ECHINODERMS ANSWER :D

Discussion

21012.	Question : An excessive secretion of growth hormone in adults lead to.....
Answer» Gigantism Dwarfism ACROMEGALY Cretinism SOLUTION :Acromegaly

Discussion

21013.	Question : An example of short day plant is
Answer» wheat maize Chrysanthemum radish

Discussion

21014.	Question : An example of selectively permeable membrane is:
Answer» plasmalemma cell WALL CHLOROPLAST membrane mitochondrial membrane Answer :A

Discussion

21015.	Question : An example of phosphate solubilizing symbiotic association is:
Answer» AZOLLA Rhizobium Pseudomonas MYCORRHIZA Solution :Mycorrhiza

Discussion

21016.	Question : An example of gliding joints is ……………………………………………
Answer» HUMERUS and GLENOID CAVITY Femur and tibio – fibula Occipital CONDYLE and ODONTOID process Zygopophyses of adjacent vertebrae Solution :Femur and tibio – fibula

Discussion

21017.	Question : An example of free living nitrogen fixing aerobic bacteria is :
Answer» Clostridium Rhizobium AZOTOBACTER Frankia SOLUTION :Azotobacter

Discussion

21018.	Question : An example of feedback inhibition is____
Answer» CYANIDE action on cytochrome Sulpha drug on folic ACID synthesiser bacteria ALLOSTERIC INHIBITION of hexokinase by glucose-6-phosphate The inhibition of succinic dehydrogenase by malonate Solution :Allosteric inhibition of hexokinase by glucose-6-phosphate

Discussion

21019.	Question : An example of feedback inhibition is
Answer» Cyanide ACTION on cytochrome Sulpha DRUG on folic acid synthesiser bacteria Allosteric inhibition of hexokinase by glucose-6-phosphate The inhibition of succinic dehydrogenase by malonate Answer :C

Discussion

21020.	Question : An example of ex situ conservation is
Answer» NATIONAL PARK Seed BANK Wildlife santuary Sacred Grove Answer :B

Discussion

21021.	Question : An example of edible underground stem is
Answer» CARROT GROUNDNUT SWEET POTATO Potato Answer :D

Discussion

21022.	Question : An example of colonial alga is
Answer» Chlorella Volvox Ulothrix Spirogyra ANSWER :B

Discussion

21023.	Question : An example of colonial algae is
Answer» Chlorella Volvox Ulothrix Spirogyra Answer :B

Discussion

21024.	Question : An example of axile placentation is
Answer» MARIGOLD ARGEMONE Dianthus Lemon ANSWER :D

Discussion

21025.	Question : An example of a seed with endosperm, perisperm, and caruncle is
Answer» coffee lily castor cotton Answer :C

Discussion

21026.	Question : An example of a filamentous green alga is :
Answer» CHLAMYDOMONAS VOLVOX SPIROGYRA FUCUS SOLUTION :Spirogyra

Discussion

21027.	Question : An example in which reproductive structues lack a layer of sterile vegetative cells surrounding the egg is
Answer» Funaria Yeast Riccia Cycas Answer :B

Discussion

21028.	Question : An example for storage fibrous roots and cladophylls is
Answer» ASPARAGUS CASUARINA DIOSCOREA BOUGAINVILLEA ANSWER :A

Discussion

21029.	Question : An example for plate meristem is
Answer» PROTODERM PERIBLEM EMBRYO Endosperm Answer :A

Discussion

21030.	Question : An example for enucleated cell in plants is :
Answer» parenchyma CELL meristematic cell TRACHEID a mature sieve TUBE cell Solution :a mature sieve tube cell

Discussion

21031.	Question : An essential element isthat which
Answer» improves HEALTH of the plants is irreplaceable and indispensable for GROWTH of plants is found in PLANT ash is AVAILABLE in the soil Answer :B

Discussion

21032.	Question : An epithelial tissue which has thin flat cells, arranged edgeto edge so as to appear like closely packed tiles is present at the inner lining of : -
Answer» cheeks FALLOPIAN TUBE STOMACH trachea Solution :cheeks

Discussion

21033.	Question : An epithelial tissue which has thin flat cell, arranged edge to edge so as to appear like closely packed tiles, is present at
Answer» OUTER SURFACE of ovary Inner LINING of FALLOPIAN tubes Inner lining of stomach Inner lining of cheeks Answer :D

Discussion

21034.	Question : An epiphyte gets its nutrients from the ………….whereas a parasite from the ………..
Answer» SOLUTION :AIR,HOST PLANT

Discussion

21035.	Question : An enzyme which increases the rate of permeability across the PM is :
Answer» Permease Catalase Gelatinase AMYLASE ANSWER :A

Discussion

21036.	Question : An enzyme which increases the rate of permeability across the membrane is
Answer» PERMEASE CATALASE GELATINASE amylase Answer :A

Discussion

21037.	Question : An enzyme that can stimulate germination of barley seeds is
Answer» lipase PROTEASE invertase `alpha`- amylase ANSWER :D

Discussion

21038.	Question : An emzyme extract when subject to electric field, Sepatrated into two fractions each catalysing the same reaction. These fractins are
Answer» allsoteric ENZYME isoenzyme apoenzyme activator Answer :B

Discussion

21039.	Question : An enzyme can perform its catalytic activity in ________ structure
Answer» PRIMARY SECONDARY Tertiary Quarternary Answer :C

Discussion

21040.	Question : An elderly woman slipped in the bathroom and had severe pain in her lower back . After X - ray examintion doctors told her it is due to a slipped disc . What does that mean ? How does it affect our health ?
Answer» Solution :Slip disc is medical CONDITION .It affects spinal cord due to friction of ( annulus fibrosus) intervertebrae disc . As a result , soft middle portion PROJECTED on outer SIDE of injured ring. this intervertertebrae disc , between two cnetrum of connecting vertebrae is found from second vertebrae till coccygeal vertebrae . It forms strong joints .It supports various movements of spinal cord . Slip disc at the back region results , in pain of hind limb due to sciatic nerve and numbness in LOWER body parts .

Discussion

21041.	Question : An elderly women slipped in the bathroom and had severe pain in her lower back. After X-ray examination doctors told her it is due to a slipped disc. What does that mean? How does it affect our health?
Answer» Solution :SLIPPED disc is a medical condition in which spine is AFFECTED due to wear and tear in the outer fibrous ring (anulus fibrosus) of an INTERVERTEBRAL disc, allowing the soft, central portion to bulge out beyond the damaged outer rings. These intervertebral disc are present between the bodies of adjacent vertebrae from the second cervical vertebra to the sacrum. This discs form strong joints that permit various. movements of vertebral column and absorbs vertical shock. The cause of slip disc can be due to general wear and tear of intervertebral disc during PERFORMING various jobs, that require constant sitting and squatting. The slipped disc or herniation occurs in two regions of body. i.e., cervical disc and lumber disc. Slip disc in lower back lumber disc, lead to sharppain in one part of leg due to sciatica, (disturbance in sciatic nerve), hip and cause NUMBNESS in other lower parts of the body. Slip disc in neck region (cervical disc) leads to painwhile moving neck near or over the shoulder bone or pain occurs while moving forearm, or fingers. It also causes numbness in shoulder, elbow, forearm and finger area. Hence, slipped affect the upper and lower body parts, thus , influencing life style and health.

Discussion

21042.	Question : An effective measure to prevent global warming is
Answer» Carbon tax system Emission of GREEN HOUSE gases Afforestation cut down `O_2` and CO in atmosphere Answer :C

Discussion

21043.	Question : An edible Rhodophyte is
Answer» POLYSIPHONIA Batrachospermum Porphyra Corallina ANSWER :C

Discussion

21044.	Question : An edible part of mushroom is
Answer» PRIMARY MYCELIUM SECONDARY mycelium Rhizomorph Basidioearp Answer :D

Discussion

21045.	Question : An ecosystem which can be easily damaged but can recover after some time if damaging effect stops will be having
Answer» LOW STABILITY and HIGH RESILIENCE high stability and low resilience low stability and low resilience high stability and high resilience Answer :A

Discussion

21046.	Question : An economically important bryophyte is
Answer» Riccia Marchanita SPHAGNUM Funaria Solution :An ECONOMICALLY IMPORTANT BRYOPHYTE is Sphagnum.

Discussion

21047.	Question : An inverted pyramid of biomass can be found in which ecosystem?
Answer» TUNDRA Desert Sea Rain forest Answer :C

Discussion

21048.	Question : An average healthy human breathes.
Answer» 12- 18 TIMES/MINUTES 17-20 times / minutes 8- 12 times / minutes 12- 16 times / minutes Solution :17-20 times / minutes

Discussion

21049.	Question : An artificialcell made of selectively permeablemembrane immersed in a beaker ( in the figure). Read the values andanswer the following questions ? (a) Draw an arrow to indicate the direction of water movement. (b) Is the solution outside the cell isotonic, hypotonic or hypertonic ? (c) Is the cell isotonic, hypotonic or hypertonic ? (d) Will the cell become more flaccid, more turgid or stay in original size ? (e) With reference to artificial cell state, theprocess is endosmosis or exosmosis ? Give reasons.
Answer» Solution :(a) (B) HYPERTONIC (C) hypotonic (d) more turgid (e) Since `Psi_(W)=-8`, this process is ENDOSMOSIS.

Discussion

21050.	Question : An association between roots of higher plants and fungi is called (A) Lichen (B) Fern (C) Mycorrhiza (D) BGA
Answer» Lichen Fern Mycorrhiza BGA Solution :Mycorrhiza is the symbiotic association of FUNGUS with roots of a HIGHER plants like gymnosperms and angiosperms. The fungus is DEPENDENT on plants for food and shelter, while the plants are BENEFITTED by the fungal hyphae as they are involved in absorption of WATER and dissolved minerals present in the soil debris and makes it available to the plants. Whereas lichens are the symbiotic association between algae and fungi. Ferns are group of plants, belong to pteridophytes like other vascular plants and BGA is blue-green algae with a prokaryotic cell.

Discussion

Explore topic-wise InterviewSolutions in .

Question :An inflorescence in which flowers arise from different points but reach the same level is

Question : An inflorescence with main axis elongated bearing flowers in a pendulous axis is called

Question : An inflorescence having sessile bisexual flowers in acropetal succession is

Question : An increased heart beat is called................

Question : An important difference between C_3 and C_4 plants is photorespiration. Explain how photorespiration occurs in plants.

Question : An important characteristic that hemichordates share with chordates is

Question : Hemichordates posses the characters of echinoderms and chordates. Write any 3 characters of echinoderms as well as chordates seen in hemichordates.

Question : State whether the following statement is true or false. An extracellular matrix helps some cells to adhere toneighbouring cells. A. TrueB. False

Question : An exotic breed of poultry is

Question : An exhausted student was attending a lecture. After 30 minutes or so, he lost interest and he let go with ia tremendous yawn. To his great distress he couldn't his mouth-his lower jaw was locked open. What do you think would have caused it?

Question : An excretorysystem is absent in

Question : An excessive secretion of growth hormone in adults lead to.....

Question : An example of short day plant is

Question : An example of selectively permeable membrane is:

Question : An example of phosphate solubilizing symbiotic association is:

Question : An example of gliding joints is ……………………………………………

Question : An example of free living nitrogen fixing aerobic bacteria is :

Question : An example of feedback inhibition is____

Question : An example of feedback inhibition is

Question : An example of ex situ conservation is

Question : An example of edible underground stem is

Question : An example of colonial alga is

Question : An example of colonial algae is

Question : An example of axile placentation is

Question : An example of a seed with endosperm, perisperm, and caruncle is

Question : An example of a filamentous green alga is :

Question : An example in which reproductive structues lack a layer of sterile vegetative cells surrounding the egg is

Question : An example for storage fibrous roots and cladophylls is

Question : An example for plate meristem is

Question : An example for enucleated cell in plants is :

Question : An essential element isthat which

Question : An epithelial tissue which has thin flat cells, arranged edgeto edge so as to appear like closely packed tiles is present at the inner lining of : -

Question : An epithelial tissue which has thin flat cell, arranged edge to edge so as to appear like closely packed tiles, is present at

Question : An epiphyte gets its nutrients from the ………….whereas a parasite from the ………..

Question : An enzyme which increases the rate of permeability across the PM is :

Question : An enzyme which increases the rate of permeability across the membrane is

Question : An enzyme that can stimulate germination of barley seeds is

Question : An emzyme extract when subject to electric field, Sepatrated into two fractions each catalysing the same reaction. These fractins are

Question : An enzyme can perform its catalytic activity in ________ structure

Question : An elderly woman slipped in the bathroom and had severe pain in her lower back . After X - ray examintion doctors told her it is due to a slipped disc . What does that mean ? How does it affect our health ?

Question : An elderly women slipped in the bathroom and had severe pain in her lower back. After X-ray examination doctors told her it is due to a slipped disc. What does that mean? How does it affect our health?

Question : An effective measure to prevent global warming is

Question : An edible Rhodophyte is

Question : An edible part of mushroom is

Question : An ecosystem which can be easily damaged but can recover after some time if damaging effect stops will be having

Question : An economically important bryophyte is

Question : An inverted pyramid of biomass can be found in which ecosystem?

Question : An average healthy human breathes.

Question : An association between roots of higher plants and fungi is called (A) Lichen (B) Fern (C) Mycorrhiza (D) BGA