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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.
| 1101. |
Which diagram are important in b/w chapter 1 to 8 in boo |
| Answer» | |
| 1102. |
How origin of life started? |
| Answer» The deep-sea vent theory suggests that\xa0life\xa0may have begun at submarine hydrothermal vents spewing key hydrogen-rich molecules. Their rocky nooks could then have concentrated these molecules together and provided mineral catalysts for critical reactions.\xa0The origin of life on Earth is a scientific problem which is not yet solved. There are many ideas, but few clear facts.Most experts agree that all life today evolved by common descent from a single primitive lifeform.\xa0It is not known how this early life form evolved, but scientists think it was a natural process which happened about 3,900 million years ago. This is in accord with the philosophy of naturalism: only natural causes are admitted.It is not known if metabolism came first or genetics. The main hypothesis which supports genetics first is the RNA world hypothesis, and the one which supports metabolism first is the protein world hypothesis. | |
| 1103. |
Which book is best for biology for class 11 2018 - 2019 half yearly exam |
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Answer» NCERT is the head of all...in biologyJust read word to word..and understand the bold words...through internet.... Predeep is best |
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| 1104. |
How many chlorophyll are present in one thylecoid? |
| Answer» A granum (plural grana) is a stack of\xa0thylakoid\xa0discs.\xa0Chloroplasts\xa0can have from 10 to 100 grana. Grana are connected by stroma\xa0thylakoids, also called intergranal\xa0thylakoids\xa0or lamellae. Grana\xa0thylakoids\xa0and stroma\xa0thylakoids\xa0can be distinguished by their different protein composition.\xa0Chlorophyll, the primary pigment used in photosynthesis, reflects green light and absorbs red and blue light most strongly. ... The green pigment\xa0chlorophyll\xa0is\xa0located\xa0within the\xa0thylakoid\xa0membrane, and the space between the\xa0thylakoid\xa0and the chloroplast membranes is called the stroma | |
| 1105. |
Identifying features of arthropoda of tge phylum cnidaria |
| Answer» Characteristics of phylum Arthropoda:(i) Triploblastic, bilaterally symmetrical and metamerically segmented animals.(ii) Body segments are grouped into two regions - cephalothorax (head and thorax together) and abdomen, or three regions - head, thorax and abdomen. Anterior part of body forms a distinct head, bearing sense organs and brain.(iii) Exoskeleton of cuticle, containing protein, lipid, chitin and often calcium carbonate is secreted by underlying epidermis and shed (moulted) at intervals.(iv) Alimentary canal is complete; mouth and **** lie at opposite ends of the body.(v) Respiration through general body surface, by gills, air tubes (tracheae) or book-lungs.(vi) True nephridia is absent. Excretion is by coelomoducts, malphigian tubules or green or coxall glands.(vii) Sexes are usually separate; sexual dimorphism is well marked in several forms.(viii) Fertilisation is usually internal, oviparous or ovoviviparous and often with metamorphosis. | |
| 1106. |
Define chrysophytes. Why are they considered as the cheif producer in the ocean |
| Answer» Chrysophytes are freshwater algae which are generally found in water having low level of calcium. It contains light harvesting complex like chlorophyll a and c, xanthophylls, beta-carotene, fucoxanthin etc. Thats why they are photosynthetic and can produce their own food, hence they are chief producers in oceans. | |
| 1107. |
What is algal bloom??? |
| Answer» Algal bloom refers to the excessive growth of algae in polluted water | |
| 1108. |
what is inclusive bodies |
| Answer» The inclusion bodies are tiny particles found freely suspended and floating within the cytoplasmic matrix. Therefore, also referred to as cytoplasmic inclusions. These cell inclusions are formed with decreasing pH and from the pool of soluble fusion proteins within the cell. They are the elementary bodies, formed during infectious diseases or within the virus-infected cells such as rabies, herpes, measles, etc. | |
| 1109. |
Differentiate between action spectrum and absorption spectrum with respect to photosynthesis |
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Answer» Oooh thanks Thanks emissions spectrum reflects all colours when it is passed from any prism Absorption spectrum is that spectrum which absorb a particular colour and emit others That is not action that is emissions |
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| 1110. |
Hoq does ammonia form in the soil bye end to nitrogen fixer get converts into nitrates |
| Answer» By bacteria | |
| 1111. |
In which part of body blood is distroy..? |
| Answer» Liver and spleen | |
| 1112. |
Mention the duration of cell cycle in yeast |
| Answer» 90 min | |
| 1113. |
What are economical importance of gymnosperms |
| Answer» Economic Importance of Gymnosperms: 1. Ornamental value: A number of gymnosperms are grown as ornamental plants, e.g., Cycas, Araucaria, Thuja etc.2. Food Value: i. ‘Sago’ starch obtained from pith and cortex of stem of C. revolute, C. rumphi etc.ii. ‘Seed starch’ obtained from seeds of Cycas rumphii, Dioon edule etc. It is prepared into flour and cooked before eating.iii. Seeds of Pinus gerardiana (chilgoza) are edible.iv. ‘Kaffir bread’ prepared from the stem pith of Encephalartos.v. Young leaves of Cycas cooked as vegetables.3. Medicinal value: i. Ephedrine (alkaloid) extracted from Ephedra used in treating asthma, cough, cold, bronchitis etc.ii. Tincture of Ephedra is a cardiac stimulant.iii. The juice extracted from young leaves of Cycas revoluta is used for curing blood vomiting and flatulence.4. Industrial Use: i. Gum-Cycas gum used as adhesive, antidote for snake bites and using malignant ulcers.ii. Tannins – Tannins extracted from bark of Araucaria, Pinus, Sequoia etc. used in leather industry.iii. Canada balsam – It is turpentine obtained from Abies balsamea and used as a mounting medium in biological preparations.iv. Amber (fossil resin) – obtained from Pinus succinifera. Wood of Pinus is used for doors, poles, beams, railway wagon flooring etc.v. Plywood prepared from Podocarpus.vi. Papers like newsprints, writing and printing papers are being prepared from the wood pulp of Pinus, Picea,Abeis, Gnetum etc.vii. The leaves of cycads are used for preparing baskets, mats, hats, brooms etc.viii. The fibres obtained from the leaves of Cycas and Macrozamia are used for stuffing pillows and making mattresses.5. Source of oils: i. Oils extracted from seeds of C. revoluta, Macrozamia reidlei, Pinus cembra and Cephalotaxus drupacea are used as edible oils.ii. Red cedar wood oil extracted from the heart wood of Juniperus virginiana is used for cleaning microscopic preparations and for oil immersion lenses.iii. Oils obtained from Cedrus deodara, Ciyptomeria japonica and Cupressus serm-perivirens are used in preparations of perfumes. | |
| 1114. |
State the cheap functions of mitochondria |
| Answer» \xa01) They are sites of cellular respiration.\xa02) They uses oxygen to oxidise carbohydrates and fats present in the cell to carbon dioxide and water.Oxidation releases energy,a portion of which is used to form ATP. Since mitochondria synthesises energy rich compound ATP it is called powerhouse of cell. ATP is called energy carrier or energy currency of the cell.\xa03) Mitochondria are able to make some of their own proteins,so they are regarded as semiautonomous organelles. | |
| 1115. |
What are sclerides |
| Answer» Sclerenchyma – These are long, dead cells with a deposit of lignin in their cell wall. They have no intercellular spaces. They provide strength to the plant and its structures. Sclerenchyma occur around the vascular tissues in stems, in the veins of leaves, and in the covering of seeds and nuts. Sclerenchymatous cells are lignified and elongated dead cells. Fibrous region of the plant is made up of sclerenchymatous tissue, a collection of sclerenchymatous cells. Fibres and sclereids are two types of sclerenchymatous cells. Sclereids usually shorter than fibres are lignified elongated dead cells. | |
| 1116. |
Difference between polyp and medusa |
| Answer» These are the two forms of coelenterata. Polyp is sessile and cylindrical. Melussa is free swimming and umbrella shaped. Here polyp reproduces asexually to form medussa and medussa reproduces sexually to form polyp. Eg. Obilia | |
| 1117. |
New model pape of first term exam please |
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Answer» So send on my what\'s app7741890620 yha pr pic nhi send ho sakti |
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| 1118. |
" Hang fish Called as scavenger ". Why ? |
| Answer» Scavenger fish\xa0are bottom feeders that eat debris, dead\xa0fish, and algae on the floor of a body of water.\xa0Scavengers\xa0help keep water clean and are a major asset to the environment in which they live.\xa0Other\xa0catfish\xa0and\xa0loach\xa0species are scavengers and will hunt around the aquarium floor looking for waste food material. These fish often use sensitive barbels to locate food. | |
| 1119. |
Frnds plz reply for my qu. Anyone of u guys |
| Answer» | |
| 1120. |
Plz brief me with the examples of fungi with coenocytic condition |
| Answer» Rhizopus and Mucor | |
| 1121. |
Who was the father of taxonomy |
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Answer» Carl Linnaeus is the father of modern taxonomy and scientific classification. He was a Swedish botanist who developed protocols for defining species in a uniform system. His book, System of Nature, proposed the hierarchal classification system and the three kingdoms of nature, which were subdivided into classes, orders, genera, species, and varieties. Carolus Linneaus |
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| 1122. |
Give economical importance of gymnosperms |
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Answer» Economic importance of gymnosperms: Gymnospermous plants are widely used as ornamentals. Many conifers such as pine, cedar, etc., are sources of the soft wood used in construction and packing. Medicinal uses: An anticancer drug Taxol is obtained from Taxus. Many species of Ephedraproduce ephedrine, which can be used in the treatment of asthma and bronchitis. The seeds of Pinus gerardiana are edible. Resins are used commercially for manufacturing sealing waxes and water-proof paints. A type of resin known as turpentine is obtained from various species of Pinus. Like taxol anticancer drug Medicinal purpose |
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| 1123. |
NAME RESERVE food in phaeophyoece group of algae |
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Answer» Complex carbohydrates in the form of lamminarin and mannitol What u wnt 2 ask |
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| 1124. |
What do you mean by dikaryon phase |
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Answer» Nahi you are wrong Two nucleus in a cell and phase called dikaryophase |
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| 1125. |
Why leaves of Same plant are darker green in Shadyside as compared to sunlight side |
| Answer» As chrolophyll are more in shady side as compared to sunlight side because they get less sunlight | |
| 1126. |
What heart known myogenic, |
| Answer» The heart is entirely made up of cardiac muscles. Muscle cells are also called as myocytes. Myogenic means related to muscles. The control of the heart function is by a set of muscles or special node of modified , the sinoatrial node (SAN) located in the atria, so heart is therefore, called myogenic. | |
| 1127. |
Which pigment do xanthophyll and carotenoid gives??? |
| Answer» Xanthophylls\xa0are a class of oxygen-containing\xa0carotenoid pigments,4 responsible for the color of many of the yellow, orange, and red hues of flowers, fruits, vegetables (corn, pepper, etc.), egg yolks, and feathers, shells, or flesh of many animal species (flamingo, canary, shrimp, lobster, chicken, or salmonids).\xa0Non-photochemical quenching is one of the main ways of protecting against photoinhibition. In higher plants, there are three\xa0carotenoid pigments\xa0that are active in the\xa0xanthophyll\xa0cycle: violaxanthin, antheraxanthin, and zeaxanthin. | |
| 1128. |
Practical chapters |
| Answer» ? | |
| 1129. |
Hlo friends....Biology mai chapters:- 1,2,3,4,5,6,7 and 8 kitne- kitne marks k aayenge..... |
| Answer» Depend upon your teacher. | |
| 1130. |
Difference between gymonosperm and angiosperm ? 5 mark |
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Answer» \tAngiospermGymnospermSeed is produced by flowering plants and is enclosed within ovarySeed is produced by non-flowering plants and are unenclosed or naked.The lifecycle of these plants are seasonalThese plants are evergreenHas triploid tissueHas haploid tissueLeaves are flat in shapeLeaves are scalelike and needle-like in shapeHardwood typeSoftwood typeReproduction rely on animalsReproduction rely on windReproductive system present in flowers (unisexual or bisexual)Reproductive system present in cones and are unisexual\t Given in ncert |
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| 1131. |
Chapter 17 with solution ncert |
| Answer» | |
| 1132. |
name the scientist who gave phylogenetic system of classification |
| Answer» Adolf Engler & Karl Prantl | |
| 1133. |
Identify the phylum in which adults exhibit radial symmetry and larva exhibit bilateral symmetry. |
| Answer» Echinodermata | |
| 1134. |
Economic importance of methenogens? |
| Answer» Helpful in producing methane gas in gobar gas plant | |
| 1135. |
How many carbon compound present in citric acid?? |
| Answer» | |
| 1136. |
Define the nutrition of eubacteria? |
| Answer» A great many of the most familiar eubacteria are heterotrops meaning they must take food in form outside sources.... the cells of these bacteria are often much larger than other bacteria,which in the past led this group to be classified as rather than bacteria. | |
| 1137. |
Specific function of mesosomes... |
| Answer» Mesosome is a convoluted membranous structure formed in a prokaryotic cell by the invagination of the plasma membrane. Its functions are as follows:(1) These extensions help in the synthesis of the cell wall, replication of DNA. They also help in the equal distribution of chromosomes into the daughter cells.(2) It also increases the surface area of the plasma membrane to carry out various enzymatic activities.(3) It helps in secretion processes as well as in bacterial respiration. | |
| 1138. |
How do our bone joints function without grinding noise and pain? |
| Answer» \xa0The presence of synovial fluid, between articulating surface of the two bones enclosed within synovial cavity of synovial joints to makes our joints to function without grinding noise and pain.\xa0The bone joints function without grinding noise and pain because the end of the bones are covered by the articular cartilage which allows easy movement of the bones against each other. | |
| 1139. |
What is mitoses |
| Answer» | |
| 1140. |
Emulsification means |
| Answer» Process of breaking down of large fat globules | |
| 1141. |
Which group of plants is called vascular cryptogamessage |
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Answer» Pteridophytes. Pteridophytes are called as the vascular or first terrestial plant First of all,they are not cryptogamessage....?they r cryptogams and the answer of ur question is "Pteridophytes".....??? |
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| 1142. |
Can blood cells is broken.....when our body is toched with any thing |
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Answer» Only cells are broken not blood cells No |
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| 1143. |
What is the sugar found in haemolymph of insects called? |
| Answer» Trehalose | |
| 1144. |
what is glutation |
| Answer» | |
| 1145. |
Explain the main chrecteristics feature of ANNELIDA????? |
| Answer» They have segments of metameres in their body . Parapodia also present as a lateral appendages for swimming . Nephridia helps in excretion.reproduction is sexual as well as they have both male and female in individual body except earthworms and leeches | |
| 1146. |
What are Hela cells |
| Answer» | |
| 1147. |
Difference between slime moulds and euglinoids |
| Answer» Euglenoids\tMostly freshwater\tMotile, flagellate\tThey lack cell wall.\tMost euglenoid are photosynthetic but some are heterotrophic.\tThey have single stage in life cycle which is mobile.Slime molds\tThey are found in moist terrestrial habitat.\tSlime molds have complex life cycle, in some stages they are motile but in some stage they are immobile.\tThey possess cell wall.\tHeterotrophic\t\u200bSlime molds have two stages in life i.e free living and slug stage | |
| 1148. |
What is offset stem??? |
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Answer» Offset** Its a special modification of stem in which new plant will grow on a very short internode this short internode generally known as offstem and this type of formation of new plant on a stem mostly seen in aquatic plants Tell me fast guy\'s |
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| 1149. |
Cephalodia |
| Answer» It\'s means | |
| 1150. |
Why unicellular organisms are immortal |
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Answer» Because they have single cell and it contains single DNA structure beacause the genetic composition of the unicellular organisms is conserved. The progenies are the exact replication of the parent cells in their genetic make up. |
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