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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

4051.

Question : Central Nervous System consists of .................and…………… .

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SOLUTION :BRAIN, SPINAL CHORD
4052.

Question : Cellular totipotency was for the first time demonstrated by

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<P>F.C. STEWARD
P. Maheshwari
W.H.Muir
Y.P.S. Bajaj

Answer :A
4053.

Question : Cellular DNA is the information source for making _____ in the cell.

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SOLUTION :PROTEINS
4054.

Question : Cells, which create water current and ingest food in Leucosolenia and other sponges

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pinacocytes
choanocytes
porocytes
trophocytes 

ANSWER :B
4055.

Question : Cells from which cnidoblasts of Hydra are derived

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nerve
epithelio-muscular
interstitial cells
sensory 

ANSWER :C
4056.

Question : Cell wall of which one of these is not made up of cellulose ?

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Bacteria
Hydrilla
Mango tree
Cactus

Answer :A
4057.

Question : Cell walls of diatoms are indestructibel because of the presence of

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`CaCO_(3)`
Silica
Chitin
All of the above

Answer :B
4058.

Question : Cell wall is

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PERMEABLE
SELECTIVELY permeable
IMPERMEABLE
DIFFERENTIALLY permeable

SOLUTION :N/A
4059.

Question : Cell wall is chiefly composed of which material in plants ?

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Celllulose
Peptidoglycan
Chitin
Both B and C

Answer :A
4060.

Question : Cell wall in one of the followingis extremely well preserved in abundance as fossils

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DIATOMS 
dinoflagellates
slime moulds
ciliates 

ANSWER :A
4061.

Question : Cell organelle, which has electron transport system is

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centriole
ER
mitochondria
nucleolus

Solution :N/A
4062.

Question : "Cell division is a type of reproduction in unicellular organisms." Justify.

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SOLUTION :Unicellular ORGANISMS, eg, Amoeba, reproduce by cell division. A parent cell can DIVIDE into TWO or more daughter cells during this. This is called fission. So, cell division is a TYPE of reproduction in unicellular organisms.
4063.

Question : Cavity of vitreous humor is

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BEHIND the LENS
between CHOROID and RETINA
between choroid and retina
between SCLEROTIC and sclerotic

Answer :A
4064.

Question : ……….causes stomatal closure.

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SOLUTION :Abscisic ACID
4065.

Question : Casparian strips are present in the _________of the root.

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CORTEX
PITH
PERICYCLE
ENDODERMIS

SOLUTION :endodermis
4066.

Question : _____ carries the impulse towards the cell body.

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SOLUTION :DENDRITES
4067.

Question : Carnivores

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SOLUTION :LION,TIGER
4068.

Question : Carnium in man is made up of

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10 bones
12 bones
16 bones
8 bones

Answer :D
4069.

Question : Carefully observe the given diagrams and give answer of following questions : Identify organisms (a), (b), (c), (d) and write their names.

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Solution :(a) HYDRA
(b) Rhizopus
(C) Bryophyllum
(d) PLANARIA
4070.

Question : Carefully observe the given diagrams and give answer of following questions : How is this biological process useful for organisms?

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SOLUTION :To MAINTAIN CONTINUITY of life and to INCREASE their number
4071.

Question : Carefully observe the given diagram/ chart and answer the questions related with it: What is the ratio of expression of dominant and recessive traits in the F_(2) generation?

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Solution :In `F_(2)` GENERATION the RATIO of EXPRESSION of dominant character to the RECESSIVE character is `3:1`.
4072.

Question : Carefully observe the given diagram/ chart and answer the questions related with it: Which character' is a dominant one ? How would you decide that it is a dominant character ?

Answer»

Solution :PURPLE colour of flowers is a dominant CHARACTER and white colour is the recessive character. The HYBRIDISATION between the parents yield all plants having purple flowers in `F_(1)` generation which shows that it is dominant character.
4073.

Question : Carefully observe the given diagrams and give answer of following questions : Give names of biological processes seen in all the four diagrams.

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Solution :ASEXUAL reproduction
(a) Budding
(b) Spore formation
(C) VEGETATIVE propagation
(d) REGENERATION
4074.

Question : Carefully observe the given diagram/ chart and answer the questions related with it: In the given figure state suitable word in place of a and b for the type of reproduction.

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SOLUTION :a-Hybridisation, b-Self-fertilisation
4075.

Question : Carefully observe the given diagram/ chart and answer the questions related with it: Form one pair of homologous organs and one pair of analogous organs from the diagrams given below:

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SOLUTION :PAIR of homologous ORGANS: A and B
Pair of analogous organs: B and C
4076.

Question : Carefully observe the given diagram/chart and answer the questions based on it. Write any two uses of solar cells for space science.

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Solution :Solar cells are USED as a main ENERGY SOURCE in an artificial satellites and SPACE probes like Mars orbiters.
4077.

Question : Carefully observe the given diagram/chart and answer the questions based on it. Why is biogas considered as an excellent fuel ?

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SOLUTION :Biogas is considered as an excellent fuel because it burns without SMOKE, LEAVES no ash residue and has high heating capacity.
4078.

Question : Carefully observe the given diagram/chart and answer the questions based on it. Which energy conversion occurs by using solar cells ?

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SOLUTION :SOLAR ENERGY is CONVERTED into ELECTRICITY.
4079.

Question : Carefully observe the given diagram/chart and answer the questions based on it. Why is silicon used in a solar cells ?

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Solution :Silicon is a NATURAL semiconductor, EASILY obtained and easily MODIFIED to convert SOLAR ENERGY into electricity.
4080.

Question : Carefully observe the given diagram/chart and answer the questions based on it. Which are the gases present in biogas ?

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Solution :Biogas mainly CONSISTS gases like METHANE, CARBON dioxide, hydrogen and hydrogen SULPHIDE.
4081.

Question : Carefully observe the given diagram/chart and answer the questions based on it. Which are abundant nutrients in the slurry left behind in a biogas plant?

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SOLUTION :Nitrogen and phosphorous are ABUNDANT nutrients in the slurry LEFT BEHIND in a BIOGAS plant.
4082.

Question : Carefully observe the given diagram/chart and answer the questions based on it. Label a, b and c in given diagram.

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SOLUTION :a- DIGESTER, b-Slurry, c-Gas OUTLET
4083.

Question : Carefully observe the given diagram/chart and answer the questions based on it. If 12 solar cells are interconnected in the panel. How many watt of electricity can be produced from it when exposed to Sun ?

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SOLUTION :About 8.4 W
4084.

Question : Carefully observe the given diagram/chart and answer the questions based on it. What are components of biogas ?

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Solution :BIOGAS mainly consists gases like methane, carbon dioxide, HYDROGEN and hydrogen SULPHIDE.
4085.

Question : Carefully observe the given diagram/chart and answer the questions based on it. How is biogas obtained from slurry ?

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Solution :Slurry CONSISTS of bio-wastes/biomass and BIOGAS can be obtained through decomposition by ANAEROBIC MICROORGANISMS.
4086.

Question : Carefully observe the given diagram/chart and answer the questions based on it. (1) Observe the following pie-chart showing the major sources of energy. Refer to the pie-chart above and arrange the sources of energy in an ascending order.

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SOLUTION :`"Nuclear"lt"hydro"lt"petroleum and NATURAL GAS"lt"COAL"`
4087.

Question : Carefully observe the given diagram/chart and answer the questions based on it. (1) Observe the following pie-chart showing the major sources of energy. Identify 'a' and state where is it used as a fuel to generate electric energy through conversion of heat energy.

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Solution :COAL. It is USED as a fuel in THERMAL POWER PLANT.
4088.

Question : Carefully observe the given diagram/chart and answer the questions based on it. (1) Observe the following pie-chart showing the major sources of energy. Label 'c' and state the name of any two place where such power plants are established.

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SOLUTION :Hydropower. Hydropower plants are established at TEHRI Dam on the Ganga river and SARDAR Sarovar PROJECT on the NARMADA river.
4089.

Question : Carefully observe the given diagram/chart and answer the questions based on it. (1) Observe the following pie-chart showing the major sources of energy. Label 'b' and give the name of processes to generate it.

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Solution :Nuclear energy. The PROCESSES to GENERATE nuclear energy are : nuclear FISSION and nuclear FUSION.
4090.

Question : Carefully observe the given diagram and answer the questions related with it: Where do the given events occur?

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SOLUTION :
4091.

Question : Carefully observe the given diagram and answer the questions related with it: Write name of a, b, c, d and e in given diagram.

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SOLUTION :a-oviduct, b-ovary, c-uterus, d-cervix, e-vagina
4092.

Question : Carefully observe the given diagram and answer the questions related with it: Where do given events occur? (i) Formation of ovum and its release (ii) Fertilisation (iii) Implantation of fertilised ovum

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SOLUTION :
4093.

Question : Carefully observe the given diagram and answer the questions related with it: Identify 'c' and mention from where is it released and by which process does it reach here.

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Solution :C- Pollen grain, it is RELEASED from anther of stamen and by the PROCESS of POLLINATION it reaches on the STIGMA.
4094.

Question : Carefully observe the given diagram and answer the questions related with it: The inner wall of uterus …………..... (i) Before ovulation and (ii) What happens if ovum does not get fertilised ?

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SOLUTION :(i) Before ovulation, the inner wall of uterus becomes thick, spongy and with FULL of BLOOD SUPPLY.
(II) If ovum does not get fertilised, then thick and spongy wall of uterus along with blood and dead ovum comes out of the vagina in the form of bleeding. i.e., Menstruation.
4095.

Question : Carefully observe the given diagram and answer the questions related with it: Identify 'd' and state how seeds are formed ?

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Solution :d- FEMALE GERM cell, male germ cell fuses with it to form zygote. Zygote divides several TIMES to form an embryo within the ovule. The ovule DEVELOPS a tough coat and it is GRADUALLY converted into seed.
4096.

Question : Carefully observe the given diagram and answer the questions related with it: Identify 'b' and state the changes in its structure after fertilisation.

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SOLUTION :b-Ovary, it grows RAPIDLY and RIPENS to form a FRUIT after fertilisation.
4097.

Question : Carefully observe the given diagram and answer the questions related with it: Identify 'a' and state what it carries.

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Solution :a- POLLEN TUBE, it CARRIES MALE germ cell.
4098.

Question : Carefully observe the given diagram and answer the questions related with it: Do labelling of a, b, c, d and e in given diagram.

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SOLUTION :a-seminal vesicle, b-prostate GLAND, c- vas deferens, d-urethra, E- TESTIS.
4099.

Question : Carefully observe the given diagram and answer the questions related with it: 'd' part passes through which organ ? What changes are noticed in such organ during adolescence ?

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SOLUTION :Sperms are produced by .e. (Testis). The sperms are motile male GAMETES that CONSIST of mainly genetic MATERIAL and a LONG tail.
4100.

Question : Carefully observe the given diagram and answer the questions related with it: Both sperms and urine pass. ( ii) Sperms delivered through in it. (iii) Add their fluid secretion with sperms.

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SOLUTION : .d. PART is urethra passes through penis. The penis begins to BECOME enlarged and erect. This CHANGES are NOTICED after puberty.