Explore topic-wise InterviewSolutions in .

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.

7501.

Question : What is the role of leucocytes in the body?

Answer»

SOLUTION :LEUCOCYTES PROTECT the BODY against DISEASES.
Discussion
7502.

Question : What is the role of K^(+) ions in the opening of stomata?

Answer»

Solution :OPENING of STOMATA takes place due to INFLUX of `K^(+)` ions into GUARD cells.
Discussion
7503.

Question : What is the role of intestinal juice in digestion of protein?

Answer»

Solution :Digestion in small intestine by the intestinal juice
(i) Enteropeptidase (enterokinase) ACTIVATES trypsinogen into ACTIVE trypsin.
(ii) Aminopeptidase hydrolyses the terminal PEPTIDE bond of the peptide chain to release the LAST amino ACIDS.
(iii) Dipeptidase also acts on terminal peptide bond.
Discussion
7504.

Question : What is the role of gall bladder ? What may happen if it stops functioning or is removed ?

Answer»

SOLUTION :Gall bladder is a small round STRUCTURE which is connected by connective tissue with lateral part of liver. Bile secreted by cells of liver is stored in the gall bladder by bile ducts.
If gall bladder becomes inefficient or REMOVED then bile will be continually secreted in intestine which is not condensed as bile stored in gall bladder, gradually BODY adapts to it. But such people are advised to take FOOD having less fat because after removal of gall bladder digestion of fat is decreased noticeably.
Discussion
7505.

Question : What is the role of fibrinogen?

Answer»

Solution :Fibrinogen IA an insolube fibrin that forms the BLOOD CLOT at the type of INJURY and converted to fibrin fibres.
Discussion
7506.

Question : What is the role of feathers ?

Answer»

Solution :Following are the role of FEATHERS in birds :
(a) They create airfoil SHAPE for wings. This provides lift during flight.
(b) They help in maintaining body TEMPERATURE.
(C) PLAY important role in mating.
Discussion
7507.

Question : What is the role of Diclofenac?

Answer»

SOLUTION :Death of vulture population is ATTRIBUTED to the VETERINARY medicine Diclofence, which is responsible for the thining of the egg SHELLS. This is an example for biodiversity loss by POLLUTION.
Discussion
7508.

Question : What is the role of contractile vacuole ?

Answer»

SOLUTION :OSMOREGULATION
Discussion
7509.

Question : What is the role of contractile vacuole in protozoans ?

Answer»

SOLUTION :OSMOREGULATION and EXCRETION.
Discussion
7510.

Question : What is the role of Charles Darwin in relation to concept of species?

Answer»

Solution :Charles DARWIN's book on Origin of SPECIES EXPLAINS the EVOLUTIONARY connections of species by the process of natural selection.
Discussion
7511.

Question : What is the role of casparian strips in roots ?

Answer»

Solution :The main function of casparian strips in the endodermal cells is to PREVENT the re-entry of water into the cortex once water ENTERED the SYLEM TISSUE.
Discussion
7512.

Question : What is the role of Atrio-ventricular bundle in the functioning of heart?

Answer»

Solution :Bundle of His is a bundle of specialised nodal fibres which originates from the AV node. The Bundle of His and Purkinje fibres convey IMPULSES of contraction from the AV node to the MUSCLES of the ventricle.
Discussion
7513.

Question : What is the role of a second massenger in hormone action?

Answer»

Solution :Second messenger is generally active in those cases whose hormone does not enter the cell but interacts with a surface RECEPTOR. The inner PART of ACTIVATED receptor TAKES part in the syntesis of second messenger, e.g. CAMP. The second messenger then acts on a predetermined biochemicalpathway to carry out the function of the hormone.
Discussion
7514.

Question : What is the residual volume?

Answer»

SOLUTION :It is the volume of air that is always PRESENT in the lungs EVEN after the maximum EXPIRATORY effort.
Discussion
7515.

Question : What is the relationship between germinal layers and the formation of body cavity in case of coelomate, acoelomates and pseudocoelomates ?

Answer»

Solution :All adult multicellular organisms TYPICALLY possess a CONCENTRIC arrangement of tissues in the body. These tissues are derived from the three embryonic cell layers called germinal layers.
(i) Coelomate : There are two germinal layers in coelomates i.e. ectoderm, mesoderm and endoderm. The mesoderm lines the body cavity and THUS body cavity is present.
(ii) Acoelomate : There are two germinal layers in acoelomates i.e. ectoderm and endoderm. Bodycavity is not present in coelomate.
(iii) Pseudocoelomate : There are three germinal layers in pseudocoelomate i.e. ectoderm, mesoderm and endoderm. But mesoderm is present as scattered POUCHES and do not line the cavity hence true coelom is ABSENT.
Examples :
(i) Coelomates : Phylum - Annelida, Mollusca, Arthropoda, Echinodermata, Hemichordata and Chordata. (ii) Acoelomate : e.g. Platyhelminthes
(iii) Pseudoelomate : e.g. Ascaris.
Discussion
7516.

Question : What is the relation between osmotic pressure (OP), turgor pressure (TP) and diffusion pressure deficit (DPD) ?

Answer»

SOLUTION :DPD - OP - TP.
Discussion
7517.

Question : What is the relation between Haberlandt & complex tissue ?

Answer»

SOLUTION :HABERLANDT in 1914 USED the TERM Leptome for phloem and hadrome for xylem.
Discussion
7518.

Question : What is the reason for the colour of Red Sea ?

Answer»

SOLUTION :A cyanobacteria CALLED Trichodesmium erthraeum imparts RED colour to SEA.
Discussion
7519.

Question : What is the cause for the 'earthy odor' after rain?

Answer»

Solution :Streptomyces is a mycelial forming ACTINOBACTERIA which lives in soil, they impart "earthy ODOUR" to soil after RAIN which is DUE to the presence of geosmines (volatile organic COMPOUND).
Discussion
7520.

Question : What is the ratio of non sense codons to sense codons respectively?

Answer»

`3:1`
`1:3`
`1:20`
`20:1`

ANSWER :C
Discussion
7521.

Question : What is the ratio between the number of spindle apparatii formed during meiotic and mitotic divisions in the development of a mature embryosac from a megaspore mother cell in an ovule?

Answer»

` 1:7`
` 3:1`
` 7:3`
` 3:7`

ANSWER :D
Discussion
7522.

Question : What is the process of los of small quantites of water in droplet forms form tip of some leaves called

Answer»

SOLUTION :GUTTATION
Discussion
7523.

Question : What is the principle underlying the use of cyanobacteria in agricultural fields for crop improvement ?

Answer»

Solution :Cyanobacteria are used in agricultural CROP improvement because of their adicity to fix atmospheric NITROGEN and make it available to the PLANTS. The improves the YIELD of the crops and also reduces the cost of application of nitrogen fertilisers. e.g., Anabena and Nostoc.
Discussion
7524.

Question : What is the principle of reverse osmosis?

Answer»

Solution :Reverse Osmosis follows the same principles of osmosis, but in the reverse direction. In this process MOVEMENT of water is reversed by applying pressure to FORCE the water against a concentration gradient of the solution.
2. In reverse osmosis the water molecules MOVE from the lower concentration (salt water = hypertonic ) to higher concentration (pure water = hypotonic ) through a selectively PERMEABLE membrane.
3. Use : Reverse osmosis is USED for purification of drinking water and desalination of seawater .
Discussion
7525.

Question : What is the position of ovaries in cockroch ?

Answer»

SOLUTION :OVARIES LIE laterlly in the `2^nd - 6^th` ABDOMINAL SEGMENTS.
Discussion
7526.

Question : What is the pO_(2) in the oxygenated blood and deoxygenated blood?

Answer»

SOLUTION :`pO_(2)` of OXYGENATED blood is 95 or `pO_(2)` of deoxygenated blood is 40.
Discussion
7527.

Question : What is the pH of the stomach and intestine?

Answer»

SOLUTION :Stomach has ACIDIC PH while the intestine has ALKALINE pH.
Discussion
7528.

Question : What is the percentage of oxygen transported by haemoglobin in the form of oxyhaemoglobin ?

Answer»

`67%`
`97%`
`32%`
`50%`

Answer :B
Discussion
7529.

Question : What is the percentage of oxygen transported by Haemoglobin in the form of Oxyhaemoglobin?

Answer»

0.67
0.97
0.32
0.5
Discussion
7530.

Question : What is the percentage of lymphocytes among WBCs ?

Answer»

0.5 to 1.0 %
0.013
0.65
0.28

Solution :0.28
Discussion
7531.

Question : What is the position of ovaries in cockroach ?

Answer»

SOLUTION :In cockroach two LARGE ovaries are located at lateral SIDE of 2 to `6^(th)` segments of abdomen.
Discussion
7532.

Question : What is the other name of pivot joint?

Answer»

SADDLE joint
ellipsoidal joint
plane joint
swivel joint

Answer :D
Discussion
7533.

Question : What is the other name of Golgi complex?

Answer»

SOLUTION :DICTYOSOMES
Discussion
7534.

Question : What is the origin of Golgi apparatus.

Answer»

SOLUTION :SMOOTH ENDOPLASMIC RETICULUM.
Discussion
7535.

Question : What is the other name for scrotaxonomy?

Answer»

SOLUTION :Immunotaxonorny.
Discussion
7536.

Question : What is the normal shape of diaphragm?

Answer»

SOLUTION :It is done shaped when RELAXED and becomes FLATTENED on CONTRACTION, during inspiration.
Discussion
7537.

Question : whatis thenormalratioof sugarin humanblood ?

Answer»

`0.01%`
`0.1%`
`1%`
`0.18%`

ANSWER :B
Discussion
7538.

Question : What is the net gain of ATP molecules during glycolysis ?

Answer»

Solution :There is a NET gain of 2 ATP molecules in the glycolysis in addition to 2 hydrogen atoms sent to ETS for ATP generation. Two moles of ATP `= 7300xx2=14600`calories =14.6 Kcal of energy. It is about 5 % of TOTAL energy content of glucose MOLECULE.
Discussion
7539.

Question : What is the nitrogenous waste produced by amphibian larvae and by the adult animal?

Answer»

Solution :Amphibian LARVAE PRODUCE ammonia and the ADULT PRODUCES urea.
Discussion
7540.

Question : What is the need for transport in plants ?

Answer»

SOLUTION :Water ABSORBED from roots must travel upto leaves by XYLEM for food PREPARATION by photosynthesis. Likewise, food prepared from leaves has to travel to all parts of the plant INCLUDING roots for growth and other processes.
Discussion
7541.

Question : What is the need for classification?

Answer»

Solution :The basic need for classification are:
1. To identify and differentiate CLOSELY RELATED species.
2. To know the VARIATION among the species.
3. To understand the evolution of thespecies.
4. To create a phylogenetic tree among the different groups.
Discussion
7542.

Question : What is the need for cladistics?

Answer»

Solution :Need for cladistics:
1. It is commonly used and ACCEPTED method for , CREATING phylogenetic system of classifications.
2. Cladistics produces a HYPOTHESIS about the relationship of ORGANISMS to predict the phylogeny.
3. Cladistics HELPS to elucidate mechanism ofevolution.
Discussion
7543.

Question : What is the nature of urine of human being?

Answer»

Solution :The urine formed is a yellow coloured WATERY FLUID which is SLIGHTLY acidic in nature (PH 6.0).
Discussion
7544.

Question : What is the name of the structures which help the mandibles and function as accessory jaws ?

Answer»

Maxillae
GALEA
LACINIA
LABIAL PALP

SOLUTION :Maxillae
Discussion
7545.

Question : What is the nature of cell walls in diatoms?

Answer»

Solution :The CELL walls of DIATOMS are made of silica.
Their cell wall construction is known as frustule.
It consists of two thin overlapping shells that fit into each other such as a soap box.
When the diatoms die, the silica in their cell wall gets DEPOSITED in the form of diatomaceous earth.
This diatomaceous earth is very soft and quite inert.
It is USED in filtration of oils, SUGARS and for other industrial purposes.
Discussion
7546.

Question : What is the name of the portion of alimentary canal which crushes the food ?

Answer»

CROP
GIZZARD
OESOPHAGUS
STOMACH

SOLUTION :Gizzard
Discussion
7547.

Question : What is the name of the painful respiration?

Answer»

DYSPNOEA
NARCOSIS
HYPOXIA
DECOMPRESSION sickness.

Answer :A::D
Discussion
7548.

Question : What is the name of the genetic sequence used to identify a plant?

Answer»

Solution :t. DNA barcoding is a TAXONOMIC method that uses a very short GENETIC sequence from a standard part of a genome.
2. The genetic sequence used to identify a plant isknown as "DNA tags" or "DNA barcodes".
3. Paul Hebert in 2003 proposed .DNA barcoding.and he is considered as .Father of barcoding..
4. The gene region that is being used as an effective barcode in plants is present in two genes of the chloroplast, matK and rbcL, and have been approved as the barcode regions for plants.
5. Sequence of unknown species can be matched from submitted sequence in GenBank using Blast (web - programme for searching the closely related sequence).
Significance of DNA barcoding:
1. DNA barcoding greatly helps in identification and classification of organism.
2. It aids in mapping the extent of biodiversity.
3. DNA barcoding techniques require a large database of sequences for comparison and prior knowledge of the barcoding region.
4. However, DNA barcoding is a HELPFUL tool to determine the authenticity of botanical MATERIAL in whole, cut or powdered form.
Discussion
7549.

Question : What is the name of joint between ribs and sternum ?

Answer»

cartilaginous joint
Angular joint
Gliding joint
Fibrous joint

Solution :In SLIGHTLY movable or cartilaginous JOINTS, the opposing SURFACES are conneted by cartilage, which allows very little movement. Another EXAMPLE is joints between ADJACENT vertebrae.
Discussion
7550.

Question : What is the name of eight blind tubes which arise from the anterior end of the mesenteron in cockroach?

Answer»

HEPATIC caecae
Malpighian tubes
Tracheal tubes
Spiracles

SOLUTION :Hepatic caecae
Discussion