22339 + Interview Questions in Biology in Class 11 Page 284 InterviewSolution

14151.	Question : Name the main components of an interphase nucleus.
Answer» SOLUTION :Nuclear envelope, NUCLEOPLASM, nuclear matrix, CHROMATIN fibers, nucleolus.

Discussion

14152.	Question : Name the locomotory organs of Amoeba.
Answer» SOLUTION :PSEUDOPODIA

Discussion

14153.	Question : Name the locomotory organs in echinoderms.
Answer» SOLUTION :TUBE FEET.

Discussion

14154.	Question : Name the locomotory appendages of cockroach on the basis of external morphology
Answer» Solution :Three PAIRS of LEGS and TWO pairs of WINGS.

Discussion

14155.	Question : Name the layers through which the exchange of gases takes place in the lungs.
Answer» SOLUTION :There are 3 layers. (i) Squamous epithelium of alveoli (ii) BASEMENT MEMBRANES (iii) Endothelium of BLOOD capillaries.

Discussion

14156.	Question :Name the locomotory organelles of the protists.
Answer» SOLUTION :PSEUDOPODIA, FLAGELLA, CILIA.

Discussion

14157.	Question : Name the light receptor pigment present in seeds.
Answer» ANSWER :PHYTOCHROME

Discussion

14158.	Question : Name the layers of plasma membrane as proposed by Danielli-Davson.
Answer» SOLUTION :Outer protein LAYER, molecular LIPID layer and an INNER protein layer.

Discussion

14159.	Question : Name the layers found in Human Blood vessels.
Answer» Solution :The blood vessels in humans are composed of three layers, tunica intima, tunica media and tunica externa. The inner LAYER, tunica intima or tunica INTERNA SUPPORTS the VASCULAR endothelium, the middle layer. Tunica media is composed of smooth muscles and an extra cellular matrix which contains a protein, elastin. The outer layer, tunica extema or tunica adventitia is composed of COLLAGEN fibres.

Discussion

14160.	Question : Name the layers of adrenal cortex and mention their secretions.
Answer» Solution : A pair of ADRENAL glands are located at the anterior end of the kidneys. Hence, they are called suprarenal glands. The outer region is called CORTEX and the inner region is medulla The adrenal cortex has three DISTINCT ZONES, • Zona Glomerulosa, • •Zona fasciculata, • Zona reticularis, Zona Glomerulosa: It is the outer thin layer. It constitutes about 15% of the cortex. It secretes mineralocorticoids. Zona fasciculata: It is the middle wide layer constituting about 15% of adrenal cortex. It secretes glucocorticoids such as cortisol, CORTICOSTERONE and trace amounts of adrenal androgen and oestrogen. Zona reticularis: It is the inner zone of adrenal cortex. It constitutes about 10% of adrenal cortex. It secretes the adrenal androgen, trace amount of oestrogen and glucocorticoids.

Discussion

14161.	Question : Name the larva of molluscs?
Answer» SOLUTION :Veliger LARVA.

Discussion

14162.	Question : Name the larvae of sponges.
Answer» SOLUTION :PARENCHYMULA and AMPHIBLASTULA.

Discussion

14163.	Question : Name the larva of hemichordates?
Answer» SOLUTION :TORNARIA LARVA.

Discussion

14164.	Question : Name the larva of ctenophores?
Answer» SOLUTION :CYDIPPID LARVA.

Discussion

14165.	Question :Name the larva of annelids.
Answer» SOLUTION :Trochophore LARVA.

Discussion

14166.	Question : Name the larva of cnidarians?
Answer» SOLUTION :PLANULA LARVA.

Discussion

14167.	Question : Name the largest unicellular alga .
Answer» SOLUTION :ACETABULARIA .

Discussion

14168.	Question : Name the largest vein of human body.
Answer» SOLUTION :INFERIOR VENA CAVA.

Discussion

14169.	Question : Name the largest part of the brain
Answer» SOLUTION :CEREBRUM

Discussion

14170.	Question : Name the largest gland in man's body. Describe its morphology.
Answer»

Discussion

14171.	Question : Name the largest bone of the body.
Answer» SOLUTION :FEMUR the THIGH BONE.

Discussion

14172.	Question : Name the large cells present in adipose tissue.
Answer» SOLUTION :ADIPOCYTES.

Discussion

14173.	Question : Name the largest bacterium species.
Answer» SOLUTION :Thiophysa volutans (a SULPHUR BACTERIUM).

Discussion

14174.	Question : Name the kind of vascular bundles present in fern?
Answer» SOLUTION :Amphicribal.

Discussion

14175.	Question : Name the kind of epithelium which forms the inner lining of: (i) Blood vessels (ii) Fallopian tube. Mention one difference between the two.
Answer» Solution :(i) ENDOTHELIUM (II) CILIATED columnar epithelium. Endothelium is a SQUAMOUS epithelium.

Discussion

14176.	Question : Name the juice secreted by liver. What does it help in ?
Answer» Solution :Bile JUICE, It helps in DIGESTION of FATS.

Discussion

14177.	Question : Name the intercellular junctions which tie the cells firmly and check the movement of materials between them. (b) Name the intercellular junctions which permit ions and small molecules to pass from cell to cell without leaking into space or gap between them. (c) Name the intercellular junctions present in plant tissues.
Answer» Solution :(a) TIGHT JUNCTIONS (B) Gap junctions (C) Plasmodesmata.

Discussion

14178.	Question :Name the ion responsible for unmasking of active sites for cross-bridge activity during muscle contraction ..........
Answer» sodium potassium CALCIUM magnesium Solution :calcium

Discussion

14179.	Question : Name the instrument used for the measurement of blood pressure.
Answer» SOLUTION :Sphymogmanometer

Discussion

14180.	Question :Name the following : An apparatus used for measuring the rate of transpiration
Answer» SOLUTION :POTOMETER

Discussion

14181.	Question : Namethe inspiratory muscles of man.
Answer» SOLUTION :Phrenic MUSCLES ( of DIAPHRAGM) and external INTERCOSTAL muslces.

Discussion

14182.	Question : Name the instrument that records an ECG.
Answer» SOLUTION :ELECTROCARDIOGRAPH

Discussion

14183.	Question : Name the insect that produces Lac.
Answer» SOLUTION :Tachardia LACCA.

Discussion

14184.	Question : Name the important hormone that maintains a constant sodium level in blood.
Answer» SOLUTION :ALDOSTERONE.

Discussion

14185.	Question : Name the important sites oftranspiration in plants.
Answer» SOLUTION :STOMATA, CUTICLE and LENTICELS.

Discussion

14186.	Question : The hydrongen donor of purple sulphur bacteria is ………………….
Answer» Solution :HYDROGEN DONOR of green SULPHUR bacteria is `H_2S`. Hydrogen donor of PURPLE sulphur bacteria is thiosulphate.

Discussion

14187.	Question : Name the imp. Centres present in medulla ?
Answer» SOLUTION :The medulla contains centres which CONTROL respiration CARDIOVASCULAR reflexes and GASTRIC secretions

Discussion

14188.	Question : Name the hydrogen donor of green sulphur bacteria and purple sulphur bacteria.
Answer» Solution :1. HYDROGEN donor of GREEN SULPHUR bacteria is `H_(2)S`. 2. Hydrogen donor of PURPLE sulphur bacteria is thiosulphate.

Discussion

14189.	Question :Name the hormones which act antagonistically in order to regulate calcium levels in the blood.
Answer» SOLUTION :THYROCALCITONIN (TCT) and PARATHYROID hormone (PTH).

Discussion

14190.	Question : Name the hormones that substitute the light requirement in short-day plant.
Answer» SOLUTION :GIBBERELLINS, AUXINS, CYTOKININS, ETHYLENE.

Discussion

14191.	Question : The hormone _________ produced by anterior pituitary plays a major role in lactation.
Answer» Solution :The ANTERIOR lobe of PITUITARY secretes six tropic hormones such as growth hormone (GH), thyroid stimulating hormone (TSH). adreno corticotropic hormone (ACTH), follicle stimulaiton hormone (FSH), LUTEINIZING hormone (LH), luteotropic hormone (LTH) and melanocyte stimulating hormone (MSH) (in lower animals only). The posterior lobe of pituitary secretes the hormones namely vasopressin and OXYTOCIN.

Discussion

14192.	Question : Name the hormones released from the hypothalamus
Answer» Solution :TSH releasing hormone, ACTH releasing hormone, Gn RH, GH RELEASED factor and GH INHIBITOR factor.

Discussion

14193.	Question : Name the hormones released from adernal gland.
Answer» Solution :(i) Adrenal CORTEX 1. MINERALOCORTICOIDS like aldosterone 2. Glucocorticoids like cortisol, cortisone, corticosterone, etc. 3. Sex corticoids like ANDROSTERONE, and rostenedione etc (ii) Adrenal medulla Epinephrine and nor-epinephrine

Discussion

14194.	Question : Name the hormones released from thyroid and parathyroid
Answer» SOLUTION :THYROID- THYROXINE and THYROCALCITONIN Parathyroid-Parathormone (PTH)

Discussion

14195.	Question : Name the hormones released by duodenum.
Answer» SOLUTION : SECRETIN, CHOLECYSTOKININ and Gastroinhibitory PEPTIDE (GIP).

Discussion

14196.	Question : Name the hormone that stimulates the secretion of gastric juice :
Answer» Renin Enterokinase Enterogasterone Gastrin Answer :D

Discussion

14197.	Question : Name the hormone that helps in cell-mediated immunity.
Answer» Solution :Thymosine hormone PLAYS SIGNIFICANT role in the development and differentiation of T-Lymphocytes which PROVIDES CELL mediatd IMMUNITY.

Discussion

14198.	Question : Name the hormone released from inter mediate pituitary
Answer» SOLUTION :MELANOCYTE STIMULATING HORMONE (MSH)

Discussion

14199.	Question : Name the hormone involved in vernalisation.
Answer» ANSWER :VERNALIN.

Discussion

14200.	Question : Name the hormone produced by Graafian follicle.
Answer» SOLUTION :ESTROGEN

Discussion

Explore topic-wise InterviewSolutions in .

Question : Name the main components of an interphase nucleus.

Question : Name the locomotory organs of Amoeba.

Question : Name the locomotory organs in echinoderms.

Question : Name the locomotory appendages of cockroach on the basis of external morphology

Question : Name the layers through which the exchange of gases takes place in the lungs.

Question :Name the locomotory organelles of the protists.

Question : Name the light receptor pigment present in seeds.

Question : Name the layers of plasma membrane as proposed by Danielli-Davson.

Question : Name the layers found in Human Blood vessels.

Question : Name the layers of adrenal cortex and mention their secretions.

Question : Name the larva of molluscs?

Question : Name the larvae of sponges.

Question : Name the larva of hemichordates?

Question : Name the larva of ctenophores?

Question :Name the larva of annelids.

Question : Name the larva of cnidarians?

Question : Name the largest unicellular alga .

Question : Name the largest vein of human body.

Question : Name the largest part of the brain

Question : Name the largest gland in man's body. Describe its morphology.

Question : Name the largest bone of the body.

Question : Name the large cells present in adipose tissue.

Question : Name the largest bacterium species.

Question : Name the kind of vascular bundles present in fern?

Question : Name the kind of epithelium which forms the inner lining of: (i) Blood vessels (ii) Fallopian tube. Mention one difference between the two.

Question : Name the juice secreted by liver. What does it help in ?

Question :Name the ion responsible for unmasking of active sites for cross-bridge activity during muscle contraction ..........

Question : Name the instrument used for the measurement of blood pressure.

Question :Name the following : An apparatus used for measuring the rate of transpiration

Question : Namethe inspiratory muscles of man.

Question : Name the instrument that records an ECG.

Question : Name the insect that produces Lac.

Question : Name the important hormone that maintains a constant sodium level in blood.

Question : Name the important sites oftranspiration in plants.

Question : The hydrongen donor of purple sulphur bacteria is ………………….

Question : Name the imp. Centres present in medulla ?

Question : Name the hydrogen donor of green sulphur bacteria and purple sulphur bacteria.

Question :Name the hormones which act antagonistically in order to regulate calcium levels in the blood.

Question : Name the hormones that substitute the light requirement in short-day plant.

Question : The hormone _________ produced by anterior pituitary plays a major role in lactation.

Question : Name the hormones released from the hypothalamus

Question : Name the hormones released from adernal gland.

Question : Name the hormones released from thyroid and parathyroid

Question : Name the hormones released by duodenum.

Question : Name the hormone that stimulates the secretion of gastric juice :

Question : Name the hormone that helps in cell-mediated immunity.

Question : Name the hormone released from inter mediate pituitary

Question : Name the hormone involved in vernalisation.

Question : Name the hormone produced by Graafian follicle.