22339 + Interview Questions in Biology in Class 11 Page 143 InterviewSolution

7101.	Question :Where do fats get absorbed first?
Answer» Solution :Fats are first ABSORBED by lymph vessels and ULTIMATELY are RELEASED into the BLOODSTREAM.

Discussion

7102.	Question : Where did an epidemic bone softening disease itai-itai occurred first in ?
Answer» SOUTH korea Japan China Burma Answer :B

Discussion

7103.	Question : Where can you look for the primary xylem in a mature wood ?
Answer» SOLUTION : At the PERIPHERY of the PITH REGION.

Discussion

7104.	Question : Where are vasa rectae present?
Answer» Solution :These are blood CAPILLARIES in the FORM of LOOP flowing very CLOSE and parallel to limbs of loop of Henle.

Discussion

7105.	Question : Where can we see cryophytic & halophytic algae? Give example.
Answer» SOLUTION :Cryophytic ALGAE grow on snow. e.g., CHLAMYDOMONAS nivalis. Halophytic algae grow in SALT pans. e.g., Dunaliella SALINA.

Discussion

7106.	Question : The gene for the formation of factor VIII is located in ............... .
Answer» SOLUTION :X CHROMOSOME

Discussion

7107.	Question : Where are the following hormones synthesized in plants ? (a) IAA (b) Gibberellins (c) Cytokinins
Answer» Solution :(a) IAA : Shoot tips and apical bud (b) Gibberellins : Root tips and YOUNG leaves (c) Cytokinins : Meristematic zones LIKE root tips.

Discussion

7108.	Question : Where are sclerites present in cockroach ?
Answer» Solution :In cockroach hardened PLATE like structure FORMS exoskeleten. In each segment of cockroach hard plate like structure is located. They are of TWO types. Dorsally located are called tergites and VENTRALLY located are STERNITES.

Discussion

7109.	Question : Where are RBC’s formed ?
Answer» SOLUTION :BONE NARROW

Discussion

7110.	Question : Where are reflex center of respiratory, cardiac and vasomotor activities present ?
Answer» SOLUTION :MEDULLA OBLONGATA

Discussion

7111.	Question : Where are Purkinje fibres present?
Answer» Solution :A network of fibres PRESENT in the WALLS of ventricles.

Discussion

7112.	Question : Where are plastids seen ? Explain its type and functions in short.
Answer» Solution :Plastids are found in all plant cells and in euglenoides. These are easily observed under the microscope as they are large. They BEAR some specific pigments, thus imparting specific colours to the plants. Based on the type of pigments plastids can be clasified into three types (a) Chloroplasts (b) Chromoplasts and (c) Leucoplasts. (a) Chloroplasts : The chloroplasts contain chlorophyll and carotenoid pigments which are responsible for trapping LIGHT energy essential for photosynthesis. (b) Chromoplasts : In the chromoplasts fat soluble carotenoid pigments like carotene, xanthophylls and others are present. This gives the part of the plant a yellow, orange or red colour. (c) Leucoplasts : The leucoplasts are the COLOURLESS plastids of VARIED shapes and sizes with stored nutrients. (i) Amyloplasts : Store carbohydrates e.g., potato (ii) Elaioplasts : Store oils and fats (iii) Aleuroplasts : Store proteins.

Discussion

7113.	Question : Where are oxysomes or elementary particles present?
Answer» SOLUTION :On the INNER MEMBRANE.

Discussion

7114.	Question : Where are living organisms found ?
Answer» Solution :The wide range of living types is AMAZING. The extraordinary habitats in which we find living organisms are, Cold mountains Deciduous forests Oceans Fresh WATER Lakes Deserts Hot Springs And almost every PLACE of the earth living organisms are found. Which living organisms create SENSE of wonder ?

Discussion

7115.	Question : Where are osteocytes present ?
Answer» Solution :In the BONES. BONE CELLS are called osteocytes.

Discussion

7116.	Question : Where are myelinated nerve fibres found ?
Answer» SPINAL nerves Cranial nerves Both (A) and (B) NONE of these ANSWER :B

Discussion

7117.	Question : where are meristematic tissues found?
Answer» SOLUTION :ROOT TIP, SHOOT tip and CAMBIUM.

Discussion

7118.	Question : Where are Interstitial cells of Leydig present ?
Answer» SOLUTION :In the testis in males. They are present around the seminiferous TUBULES in the connective TISSUE.

Discussion

7119.	Question : Where are glycoproteins present in plasma membrane?
Answer» Solution :Some Peripheral PROTEINS have chains of sugars attached to then FACING the EXTERIOR. There are called glycoproteins.

Discussion

7120.	Question : Where are gibberellins present in greatest concentration?
Answer» ANSWER :IMMATURE SEEDS.

Discussion

7121.	Question : Where are extrinisc proteins found in the cell membrane ?
Answer» SOLUTION :On the OUTER and INNER surface of phospholipid MATRIX.

Discussion

7122.	Question : Where are enterocytes present?
Answer» SOLUTION : Brunners GLANDS.

Discussion

7123.	Question : Where are crypts of Lieburkuhn present?
Answer» Solution :At the base of VILLI in the SMALL intestine, (ileum) at INVAGINATIONS or pits in the intestinal EPITHELIUM.

Discussion

7124.	Question : Where are cross bridges present?
Answer» Solution :On the myosin FILAMENTS. The HEADS of MEROMYOSIN filaments FORM crossbridges.

Discussion

7125.	Question : Where are casparion strip found in plants and what are they madeup of?
Answer» Solution :The young endodermal CELLS posses a band of thickening which runs along their Radial and tangential walls. This band of thickening is CALLED casparian STRIP. They are MADE up of both suberin and LIGNIN.

Discussion

7126.	Question : Where are casparian rings found?
Answer» SOLUTION :ENDODERMIS of ROOT.

Discussion

7127.	Question : Where are bulliform cells found in leaves?
Answer» Solution :Bulliform CELLS are FOUND in the upper epidermis of monocot LEAVES.

Discussion

7128.	Question : Where are casparian strips in a root.Which chemical do they contain?
Answer» SOLUTION :ENDODERMIS in CELLS of ROOT. SUBERIN.

Discussion

7129.	Question : Bipolar nerve cells are present in
Answer» SOLUTION :RETINA of the EYE

Discussion

7130.	Question : Where are biodiversity hotspots normally located ? Why?
Answer» Solution :(i) Hotspots are areas characterized with high concentration of endemic species experiencing UNUSUAL rapid rate of habitat modification LOSS. Norman Myers defined hot spots as "regions that harbour a great diversity of endemic species and at the same time, have been significantly impacted and altered by hyman activities". (ii) A hotspot is a region that supports at least 1500 endemic vascular plant species (0.5% of the global total) has lost more than 70% of its original vegetation. (iii) There are 35 biodiversity hotspots in the world. INDIA is home to four biodiversity hotspots . They are: (1) Himalaya: Entire Indian Himalayan region. (2) WESTERN GHATS (3) Indo-Burma: Entire North-eastern India, except Assam and Andaman group of Islands (and Myanmar, Thailand, Vietnam, Laos, Cambodia and Southern China) (4) Sundalands: Nicobargroup of Islands (and Indonesia, Malaysia, Singapore, Brunei, Philippines).

Discussion

7131.	Question : Where are auxins present in the plants ?
Answer» ANSWER :SHOOT TIP and YOUNG LEAVES.

Discussion

7132.	Question : Where are adernal glands located. Are they known by any other name ?
Answer» Solution :They are PRESENT just above the KIDNEY and so are ALSO known as supra RENAL glands.

Discussion

7133.	Question : When you go to a timbermart to collect timber for your construction of a new house, how will you select good timber ?
Answer» Solution :(i)Timber is mainly USED for carpentry and buiding houses. In order to enrich the quality of timber, seasoning of wood is done. (ii) Timber is the most important tissue that sequestrates atmospheric carbon and this reduces global warming. (iii) In order to enrich the quality of timber, seasoning of wood is done through AIR and kiln drying . Wood is characterized by colour, grain , texture and figure. (iv) We must check the wood whether the wood has been gone through the seasoning. Seasoning of wood is done through by TWO methods. Air seasoning : (i) It is the process in which the moisture can be removed without resorting to artificial heat. (ii) It increase the strength , the combustibility and renders the wood LESS subject to DECAY. Kiln seasoning : It is the process, the moisture can be removed by artificial method, using steam - heater chamber. Also The wood is also classified into sap wood (pale in colour ) and heart wood (dark in colour ). Thetimber from the heartwood is more durable and more resistant to the timber from sap wood . So, I will select the heart wood which has been gone through the seasoinng of wood for my construction of new house.

Discussion

7134.	Question : When we remove co factor how could it affect the catalytic activity of enzymes?
Answer» Solution :Enzymes requirenon -protein components called co-factors for their EFFICIENT ACTIVITY. 1. When we REMOVE co - factor , the ENZYME will no longer work as a catalyst. 2. Eg. Inorganic coins are the type of co-factor. 3. Removal of inorganic coins decrease the rate of REACTION catalysed by enzymes. 4. Eg. Salivary amylase activity decreased in absence of chloride coins.

Discussion

7135.	Question : When we peel the skin of a potato tuber, we remove (A) Periderm (B) Epidermis (C) Cuticle (D) Sapwood
Answer» Periderm Epidermis Cuticle Sapwood Solution :Potato is an underground STEM OUTER epidermis of stem is known as periderm. So when we REMOVE its outer LAYER, INFACT we remove periderm.

Discussion

7136.	Question :When we homogenise any tissue in an acid, the acid soluble pool represents (A) Cytoplasm (B) Cell membrane (C) Nucleus (D) Mitochondria
Answer» cytoplasm cell membrane NUCLEUS mitochondria Solution :When PROTOPLASMIC tissue homogenise in acid, acid SOLUBLE pool SHOWS protoplasm.

Discussion

7137.	Question :When we go to hilly areas the kidney accelerates production of________.
Answer» ADRENALIN NON adrenalin ERYTHROPOIETIN Elastose

Discussion

7138.	Question : When we burn agarbatti in a room, its smell spreads in the entire room. Why?
Answer» SOLUTION :DUE to DIFFUSION

Discussion

7139.	Question : When WBC with kidney shaped nucleus enterinto connective tissue, they transform into
Answer» Microphages Macrophages Microcytes All the above ANSWER :C

Discussion

7140.	Question : When tripalmitin(fatty acid) is used as respiratorysubstance, whichof the followingfigure shows true respiratory quotient ? (A) 1 (B) 0.7 (C) 0.9 (D) 1.1
Answer» 1 `0.7` `0.9` `1.1` ANSWER :A::D

Discussion

7141.	Question : When transport proteins simultaneously move two molecules across a membrane in the same direction ,the process is called
Answer» uniport antiport symport diffusive port. Solution :Some CARRIES proteins allow transport only if TWO types of molecules move together. This is CALLED co-transport. It is of two TYPE: symport and antiport method. In symport method of co-transport, both molecules CROSS the membrane in the same direction at the same time. In antiport method of co-transport, both molecules move in opposite direction. When a molecules moves across a membrane independent of other molecule, the process is called uniport.

Discussion

7142.	Question : When there is plenty of light and higher concentration of O_2, what kind of pathway does the plant undergo? Anaylse the reasons.
Answer» Solution :PHOTORESPIRATION is the excess respiration taking place in PHOTOSYNTHETIC cells DUE to absence of `CO_(2)` and increase of `O_(2)`. This condition changes the carboxylase role of RUBISCO (RUBP carboxylase oxygenase) enzyme into oxygenase. `C_(2)` cycle or

Discussion

7143.	Question : When the vegetation of any region reaches climatic climax, it is
Answer» Hydrophytic Mesophytic Xerophytic Lithophytic Answer :B

Discussion

7144.	Question : When the succession occurs in a barren area that was not previously inhabited by plant, like sand dunes, seafloor, volcano lava sediments, it is called
Answer» PRIMARY succession Secondary succession Allogenic Ecological succession Answer :A

Discussion

7145.	Question : When the production of the cell is inhibited by its own metabolites, this control is termed as __________.
Answer» SOLUTION : FEED BACK INHIBITION

Discussion

7146.	Question : When the root is thick and fleshy, but does not take a definite shape, it said to be ______
Answer» NODULOSE ROOT TUBERCULAR root MONILIFORM root FASCICULATED root Solution :tubercular root

Discussion

7147.	Question : When the potential across the axon membrane is more negative than the normal resting potential the neuron is said to be state of
Answer» DEPOLARIZATION HYPERPOLARIZATION REPOLARIZATION HYPOPOLARIZATION SOLUTION :Hyperpolarization

Discussion

7148.	Question : When the pollen grains are not trasferred from anthers to the stigma in a flower due to the barrier or fence it is reffered as (or when some natural barrier exists between androecium and gynoecium to chek self-pollination, it is known as)
Answer» DICHOGAMY Herkogamy Cleistogamy HETEROSTYLY ANSWER :B

Discussion

7149.	Question : When the plants shed their leaves how do they respire ?
Answer» Solution :(i) When the plants shed their leaves, respiration occur by the roots of a plant. (II) They TAKE the oxygen required for respiration from the air present in -between the soil particles THOUGH extensions of the epidermal cells of a root CALLED as root hairs, by a process called as diffusion.

Discussion

7150.	Question : When the membrane potential shoots rapidly upto +45 mV, it is called the …………………. .
Answer» THRESHOLD POTENTIAL SPIKE potential repolarization hyperpolarization SOLUTION :spike potential

Discussion

Explore topic-wise InterviewSolutions in .

Question :Where do fats get absorbed first?

Question : Where did an epidemic bone softening disease itai-itai occurred first in ?

Question : Where can you look for the primary xylem in a mature wood ?

Question : Where are vasa rectae present?

Question : Where can we see cryophytic & halophytic algae? Give example.

Question : The gene for the formation of factor VIII is located in ............... .

Question : Where are the following hormones synthesized in plants ? (a) IAA (b) Gibberellins (c) Cytokinins

Question : Where are sclerites present in cockroach ?

Question : Where are RBC’s formed ?

Question : Where are reflex center of respiratory, cardiac and vasomotor activities present ?

Question : Where are Purkinje fibres present?

Question : Where are plastids seen ? Explain its type and functions in short.

Question : Where are oxysomes or elementary particles present?

Question : Where are living organisms found ?

Question : Where are osteocytes present ?

Question : Where are myelinated nerve fibres found ?

Question : where are meristematic tissues found?

Question : Where are Interstitial cells of Leydig present ?

Question : Where are glycoproteins present in plasma membrane?

Question : Where are gibberellins present in greatest concentration?

Question : Where are extrinisc proteins found in the cell membrane ?

Question : Where are enterocytes present?

Question : Where are crypts of Lieburkuhn present?

Question : Where are cross bridges present?

Question : Where are casparion strip found in plants and what are they madeup of?

Question : Where are casparian rings found?

Question : Where are bulliform cells found in leaves?

Question : Where are casparian strips in a root.Which chemical do they contain?

Question : Bipolar nerve cells are present in

Question : Where are biodiversity hotspots normally located ? Why?

Question : Where are auxins present in the plants ?

Question : Where are adernal glands located. Are they known by any other name ?

Question : When you go to a timbermart to collect timber for your construction of a new house, how will you select good timber ?

Question : When we remove co factor how could it affect the catalytic activity of enzymes?

Question : When we peel the skin of a potato tuber, we remove (A) Periderm (B) Epidermis (C) Cuticle (D) Sapwood

Question :When we homogenise any tissue in an acid, the acid soluble pool represents (A) Cytoplasm (B) Cell membrane (C) Nucleus (D) Mitochondria

Question :When we go to hilly areas the kidney accelerates production of________.

Question : When we burn agarbatti in a room, its smell spreads in the entire room. Why?

Question : When WBC with kidney shaped nucleus enterinto connective tissue, they transform into

Question : When tripalmitin(fatty acid) is used as respiratorysubstance, whichof the followingfigure shows true respiratory quotient ? (A) 1 (B) 0.7 (C) 0.9 (D) 1.1

Question : When transport proteins simultaneously move two molecules across a membrane in the same direction ,the process is called

Question : When there is plenty of light and higher concentration of O_2, what kind of pathway does the plant undergo? Anaylse the reasons.

Question : When the vegetation of any region reaches climatic climax, it is

Question : When the succession occurs in a barren area that was not previously inhabited by plant, like sand dunes, seafloor, volcano lava sediments, it is called

Question : When the production of the cell is inhibited by its own metabolites, this control is termed as __________.

Question : When the root is thick and fleshy, but does not take a definite shape, it said to be ______

Question : When the potential across the axon membrane is more negative than the normal resting potential the neuron is said to be state of

Question : When the pollen grains are not trasferred from anthers to the stigma in a flower due to the barrier or fence it is reffered as (or when some natural barrier exists between androecium and gynoecium to chek self-pollination, it is known as)

Question : When the plants shed their leaves how do they respire ?

Question : When the membrane potential shoots rapidly upto +45 mV, it is called the …………………. .