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InterviewSolution
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.
| 901. |
Define turgor pressure.. |
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Answer» Thnx Bro. ..... Turgor pressure is the pressure exerted by the cytoplasm on the cell wall.During osmosis, when the cell is placed in a hypotonic solution (solution with less solutes and higher water potential) water moves from solution into the cells. This causes the cytoplasm to build the pressure against the cell wall. This pressure is called as turgor pressure. This pressure is exerted by the protoplast against the cell wall due to the entry of water is called as pressure potential. It is the turgor pressure in the plant cells which helps the plants to be erect. As the cell walls are strong, cells do not rupture but enlarge in size to cause extension in growth. |
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| 902. |
In .................. absorption , water is just pulled through the roots and not by the roots. |
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Answer» Anyone knows the ans. to ths que..... Ishita ans it plz.. |
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| 903. |
Anybody online there????????????Ans. to my ques.........plz?????? |
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| 904. |
What is difference between algae and bryophyta |
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Answer» Thanks ALGAE :-1)they are mostly aquatic.2)body may be unicellular or multicellular.3)pores and stomata are absent for gaseous exchange.4)asexual reproduction is present or takes place5)sporophytic phase is highly reduced.BRYOPHYTES :-1)mostly terrestrial 2)multicellular3)pores and stomata are present.4)asexual reproduction does not take place.5)sporophytic phase is well developed. |
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| 905. |
Who gave the term systematic? |
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Answer» Carolous Linn ae us gave the term systematics........ Linnaeus |
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| 906. |
What is other name of forewings in cockroach? How do they look like |
| Answer» Other name of forewings in cockeroach is tegmen. | |
| 907. |
Onion is modification of leaves or stem |
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Answer» Onions are the modified leaves Leaves.. |
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| 908. |
Please tell how should i study biology dinesh book to get good result |
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| 909. |
What are centrosom? |
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Answer» They are the interconnecting link between two sister chromatids of a centrosome Its centrosome |
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| 910. |
What is vernalisation???? |
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Answer» Vernalisation is defined as the qualitative or quantitative dependence of plants on\xa0exposure to a low temperature to flower. Temperature affects flowering, metabolic activities, and germination of seeds in plants.Example: Food plants such as wheat and barley have a ‘spring variety’ and a ‘winter variety’. The ‘spring variety’ is usually planted in the spring season. As a result, it flowers and produces grains by the end of the growing season. The ‘winter variety’, however, is planted in autumn. It germinates over winter, grows in the spring and is harvested in summer. In contrast to the spring variety, the winter variety will not flower or produce grains within the flowering season if planted in spring. Vernalization can be defined as the requirement of low temperature for flowering. |
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| 911. |
Renin? |
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Answer» Renin is an enzyme in the conversion of the plasma protein angiotensinogen (produce by the liver) into angiotensinogen 1 and further to angiotensinogen 2. The later being a powerful constriction increase the glomerular blood pressure and angiotensinogen2 stimulate the adrenal cortex to produce Aldosterone which act on the cell of the ascending limb of the loop of henle and increase the role of reabsorption of Na+. It is a hormone that acts as an enzyme which is secreted by specialised cells in the afferent artetioles of the kidney cortex. |
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| 912. |
Different types of facility diffusion |
| Answer» The diffusion of the content over a cell membrane\xa0by means of transport proteins. It is a passive\xa0movement of molecules across the cell membrane from the region of higher concentration to the region of lower concentration by means of a carrier molecule.Dialysis:\xa0It is the diffusion of solutes across a selected permeable membrane. A selected permeable membrane is the one that allows specific content to pass through and other substances to pass slowly.Osmosis: The movement of water molecules from the region of higher water concentration to the region of lower water concentration through a semipermeable membrane.\xa0It is the diffusion of the solvent across a selected permeable membrane. Since water is solvent in every\xa0living being, biologists define osmosis as the diffusion of water across a selected permeable membrane.\xa0For example, Plants take water and mineral from roots with the help of osmosis. | |
| 913. |
Why do leguminus crops not require such enrichment of the soil |
| Answer» The important nitrogen fixing bacteria are those belonging to the group known as rhizobium. ... Stands of such plants may be incorporated into the soil to enrich it with nitrogen for the purpose of supplying the needs of subsequent non-leguminous crops, a practice known as green manuring. | |
| 914. |
What is a plastid |
| Answer» The plastid is a membrane-bound organelle found in the cells of plants, algae, and some other eukaryotic organisms | |
| 915. |
Can u plz give me some important question of gk? |
| Answer» Why | |
| 916. |
Is regular consuming of potatoes gives a fat body? |
| Answer» Potatoes are healthy. It’s the additional salt, sauces and oil that makes them unhealthy. Plain oven baked potato is one of the healthiest foods you can eat. Boiled potatoes are good too but oven baked are better. Potatoes are rich in carbs, but they are way better and nutritious than rice. Boiled potatoes are also low in fat. 300 gm potatoes contain approximately 0.3 gm of fat and 5.6 gm of protein. Boiled potatoes are low in calories. They help you to lose those extra pounds if eaten properly. | |
| 917. |
Name any 3 viviporous animals |
| Answer» Viviparous mammals: almost all mammalian mammals are viviparous. These animals birth their young in eggs, but they do also feed them milk. Viviparous mammals, however, are not restricted to the land. Dolphins, whales and narwhals are all viviparous as is the only flying mammal; the bat. The most common viviparous mammals are those domesticated by humans such as cats, dogs and rabbits. Wild viviparous mammals include lions, giraffes, chimpanzees and elephants. | |
| 918. |
What is lead |
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| 919. |
Why nitrogen is not found near water logged areas for plants? |
| Answer» The visual symptoms of\xa0nitrogen deficiency\xa0mean that\xa0it\xa0can be relatively easy to detect in some\xa0plant\xa0species. Symptoms include poor\xa0plant\xa0growth, and leaves become pale green or yellow because they are unable to make sufficient chlorophyll. Leaves in this state are said to be chlorotic.\xa0About 78 per cent of the air is\xa0nitrogen\xa0gas. However,\xa0nitrogen\xa0is too unreactive to be used directly by\xa0plants\xa0to make protein. It must be converted into soluble ions, such as nitrates.\xa0Nitrogen-fixing bacteria in root nodules are able to do this. | |
| 920. |
What is quscent center? |
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Answer» It is basically a stage where cell stop dividing and possess particular function It is a small region with low mitotic activity in the centre of the root apex. The quiescent centre in the root meristem serves as a reserve for replenishment of damaged cells of the meristem. |
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| 921. |
Whats taxonomy |
| Answer» The taxonomic hierarchy is a systematic framework of classification in which taxonomic groups are arranged in definite order, from higher to lower categories. Each category is considered as a taxonomic unit and represents a Taxon. | |
| 922. |
Kinetochore |
| Answer» It is a ring like structure around centromere for attachment of spindle fibres | |
| 923. |
What is taxanomy? |
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Answer» The taxonomic hierarchy is a systematic framework of classification in which taxonomic groups are arranged in definite order, from higher to lower categories. Each category is considered as a taxonomic unit and represents a Taxon. \xa0Taxonomy he branch of biology concerned with the classification of organisms into groups based on similarities of structure, origin, etc\xa0 |
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| 924. |
Which one of the following books was contributed by linn.. |
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Answer» As per I know Systema naturae , genera plantarum , species plantarum |
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| 925. |
What is quiescent phase of cell cycle??? |
| Answer» Quiescent Stage (Go): Cells which do not divide further, exit G1 phase to enter an inactive stage. This stage is called quiescent stage (Go) of the cell cycle. The cells in this stage remain metabolically active but do not undergo division. But these cells can resume division as and when required. | |
| 926. |
What is vasa recta? |
| Answer» In the blood supply of kidney, the straight arterioles of a kidney are a series of straight capillaries in the medula. They lie parallel to the loop of henle | |
| 927. |
How is human brain protected? |
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Answer» The brain is protected by the bones of skull and by covering of 3 thin membranes called meninges. The brain is also protected by cerebrospinal fluid. This watery fuild is produced by special cells in the four hollow spaces in brain called ventricles.......thes bones protect the spinal cord It is present inside our skull which is very hard and durable. It doesn\'t stick with the wall instead it floats in cerebrospinal fluid which provides cushioning to it from shocks and stuff. Between the skull and brain there is also a protective tissue layer known as meninges. |
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| 928. |
What is the difference between perisperm and pericarp........????? |
| Answer» Former is the protective outer covering of seed and the latter is the fleshy or non fleshy covering of fruits | |
| 929. |
What do you mean by polarization depolarization and repolarization of cell membrane of neurone |
| Answer» \xa0Polarization is the existence of opposite electrical charges on either side of a cell membrane (difference in inside a cell versus the outside of the cell).Depolarization is the state which the cell membrane change from positive to negative charged outside the cell and from negative to positive charge inside the cell.Repolarization is the state which the cell membrane change back to ist resting stage i.e from negative to positive charge outside the cell and from positive to negative charge inside the cell. | |
| 930. |
Meiosis 1,prophase 1 |
| Answer» \tAt the start of prophase I, the chromosomes have already duplicated. During prophase I, they coil and become shorter and thicker and visible under the light microscope.\tThe duplicated homologous chromosomes pair, and crossing-over (the physical exchange of chromosome parts) occurs. Crossing-over is the process that can give rise to genetic recombination. At this point, each homologous chromosome pair is visible as a bivalent (tetrad), a tight grouping of two chromosomes, each consisting of two sister chromatids. The sites of crossing-over are seen as crisscrossed nonsister chromatids and are called chiasmata (singular: chiasma).\tThe nucleolus disappears during prophase I.\tIn the cytoplasm, the meiotic spindle, consisting of microtubules and other proteins, forms between the two pairs of centrioles as they migrate to opposite poles of the cell.\tThe nuclear envelope disappears at the end of prophase I, allowing the spindle to enter the nucleus.\tProphase I is the longest phase of meiosis, typically consuming 90% of the time for the two divisions. | |
| 931. |
Define clocs |
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| 932. |
Define holocrine gland |
| Answer» In this gland , an entire cell filled with secretory product discharges and dies.Examples are sebaceous or oilsecreting gland. | |
| 933. |
How does cytokinesis in plants cells differ from that is animal cells ? |
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Answer» Ab paagal hai kya bilkul Plant cell me , cell division cell plate formation se hota hai Jabki Animal cell me , cell division , cell furrow formation se hota hai In animal cell division takes place by cell plate formation whereas in plant cell division takes place by cleavage. |
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| 934. |
Difine histology |
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Answer» Study of tissue is called histology Histology is the branch of biology that deals with the study of tissue. |
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| 935. |
explain phases of meiosis |
| Answer» Not possible | |
| 936. |
What will be the characterstic feature of XXX like XX is girl and XYis boy????? |
| Answer» In class 12 we study genetics. This is the question from this chapter and the main character is, it is called a super female | |
| 937. |
What is the blue print of half yeary |
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| 938. |
What is gastro-intestinal tract???? |
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Answer» Basically it is nothing but alimentory canal... The gastrointestinal tract is an organ system within humans and other animals which takes in food, digests it to extract and absorb energy and nutrients, and expels the remaining waste as feces.... |
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| 939. |
Give two examples of flattened stem |
| Answer» Opuntia and euphorbia | |
| 940. |
What is thalloid ? |
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Answer» Of plants, algae, and fungus lacking complex organization especially lacking distinct stem roots and leaves Thalloid is a vegetative body of a plant that is not differentiated into organs such as stem and leaves..Example-algae That was in my words...... Thalloid is a body which have no leaves, stems or any part which is mainly present in simple plant ....it have ...but they are not differentiated....which means u can\'t understand that where are leaves or where are stems and buds .....best example is mushroom.....i hope it will help u??? |
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| 941. |
What is sliding. |
| Answer» To move or make something move along the surface | |
| 942. |
Name of the placentation in marigold fower????? |
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Answer» Axile placentation Axile placentation |
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| 943. |
What is meta phase ? Describe |
| Answer» The nuclear envelope completely disintegrates at the onset of metaphase and the condensed chromosomes spread throughout the cytoplasm. These chromosomes are composed of two sister chromatids held at the center by centromeres. The spindle fibers attach to a disc-like structure at the surface of centromeres, known as kinetochores. The spindle fibers from one centriole attach to only one sister chromatid. The chromosomes aligned along the equator of the cytoplasm, an arrangement characteristic of metaphase known as metaphase plate. | |
| 944. |
Write briefly the process of digestion in stomach |
| Answer» Digestion: Digestion is the process by which food is broken down into simple absorbable substances. Digestion of food takes place in the digestive system. Digestive system is made up of alimentary canal and associated glands.\xa0Parts of alimentary canal:The mouth, oesophagus, stomach, small intestine and large intestine form the alimentary canal. It is also known as the digestive tract.Mouth is guarded by upper lip and lower lip. The process of taking in food through mouth is called as ingestion.Buccal cavity is the inner region of the mouth. It encloses teeth and tongue.Teeth are of different types namely, incisors, canines, premolars and molars.Incisors are used for biting food.Canines are sharp and pointed and are used to pierce or tear food.Premolars and molars are the principal grinders helping to chew and grind the food.Tongue is a muscular organ attached to the floor of the buccal cavity at the back. It helps in mixing of food with saliva and swallowing it. It also helps in tasting different types of food with the help of taste buds present on it. The buccal cavity leads into pharynx.Pharynx is at the back of buccal cavity. The pharynx is the common channel for food and air. When you swallow food, a flap-like valve called the epiglottis closes the windpipe. It prevents the entry of food particles into respiratory tract.Oesophagus also called as food pipe helps in conveying the food from buccal cavity to stomach. The oesophagus is also known as the gullet. It is about 25 centimetres long. Food inside the oesophagus reaches the stomach by peristalsis movements.Stomach is the widest part of the alimentary canal. It is a J-shaped muscular organ with stomach occurs with the help of digestive juice. Digestive juice comprises of hydrochloric acid, mucous and some enzymes.Small intestine is made up of three regions namely duodenum, jejunum and ileum. Partially digested food called the chyme from the stomach is received by the duodenum. Duodenum also receives bile form the liver, enzymes from pancreas and secretes some enzymes on its own. All these substances bring about digestion of food in the intestine. The inner walls of the small intestine have millions of small finger like projections called the villi. Villi increase the surface area for digestion as well as absorption of digested food by eight times.Large intestine comprises of colon and rectum. Undigested food is sent into large intestine. Water from the food is reabsorbed to a great extent in the large intestine. Undigested waste is stored in the rectum for defecation.**** is the opening of the alimentary canal to the exterior. This helps in the elimination of faeces by the process of egestion.Associated glands: These glands include salivary glands, gastric glands, intestinal glands, liver and pancreas.Salivary glands are present inside the buccal cavity. They secrete saliva. This saliva plays an important role in breaking down complex components like starch into simple sugars.Gastric glands present inside the stomach secrete gastric juice which helps in the digestion of food.Intestinal glands secrete various enzymes which aid in the process of digestion of food.Liver is the largest gland in our body. The liver secretes a yellowish green watery fluid called bile. It is temporarily stored in a sac called the gall bladder. Bile plays an important role in the digestion of fats. Bile is sent into duodenum through a narrow tube-like structure called the bile duct. Bile breaks the larger fat molecules into tiny droplets, thereby increasing their surface area, which helps in the digestion of fats easily.Pancreas is the mixed gland. It acts as a both endocrine and exocrine gland. The pancreas secretes the pancreatic juice that helps to digest carbohydrates, proteins and fats. The pancreatic juice converts carbohydrates into simple sugars and glucose, proteins into amino acids, and the lipids into fatty acids and glycerol. | |
| 945. |
What is diatomacious earth? |
| Answer» Diatoms left behind cell wall deposits in their habitats ,these accumulation over billions of years is termed as diatomacious earth | |
| 946. |
Which algae is present in coralloid roots of cycas?? |
| Answer» BGA | |
| 947. |
What is lodging in plants . |
| Answer» Lodging\xa0is the bending over of the stems near ground level of grain\xa0crops, which makes them very difficult to harvest, and can dramatically reduce yield. ...\xa0Lodging\xa0affects wheat, rice, and other cereals, and reducing it is a major goal of agricultural research.\xa0The\xa0causes\xa0of plant\xa0lodging\xa0are legion. High nitrogen levels, storm damage, soil density, disease, sowing date, overpopulation and seed type are all contributing factors to\xa0lodging\xa0in cereal crops. The most common plants affected by\xa0lodging\xa0are corn, but other cereal and grain crops are also at risk. | |
| 948. |
A muscle fibre tapers at both the ends and does not show striation.name it |
| Answer» Smooth muscle | |
| 949. |
What are dinoflagelates |
| Answer» A single celled organism with two flagella occurring in large numbers in marine plankton and also found in fresh water. Some produce toxins that can accmulate in shellfish resulting in poisoning when eaten. | |
| 950. |
What is eosinophils |
| Answer» They are granulated leucocytes or wbc which are present as 2to3 percent of wc and are in association with allergies.... | |