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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.
| 2951. |
What is unicellular organism and multicellular |
| Answer» \tUnicellular OrganismMulticellular OrganismThe body of the organism is composed of a single cell.The body of the organism is composed of numerous cells.Division of labour is at the organelle level. It gives a low level of operation efficiency.Division of labour may be at cellular, tissue, organ and organ system level. It gives high degree of operational efficiency.A single cell carries out all the life processes.Different cells are specialized to perform different functions.The cell body is exposed to the environment on all sides.Only outer cells are specialized to face the environment. Inner cells are devoted to other functions.A cell body cannot attain a large size because of the limit imposed by surface area to volume ratio.A multicellular body can attain a large size increasing the number of small cells.An injury of the cell can cause death of the organism.Injury or death of some cells does not affect the organism as the same can be replaced by new one.Power of division is not lost.Certain specialised cells lose power of division.A well marked capacity of regeneration is present.The capacity of regeneration decreases with increasing specialisation.The cells has the same role for itself and the organism.Cells have double role. One for themselves and other for the organism.Life span is short due to heavy load of work.Life span is ling due to limited load of work for each cell type.\t | |
| 2952. |
I want the differences between c3 and c4 plants as given in the ncert text book with explanation |
| Answer» C3\xa0PLANTS1. Examples of these plants are wheat, oats, bar¬ley, rice cotton, beans, spinach, sunflower, Chlorella etc..2. Carbon pathway in photosynthesis is C3 pathway i.e. Calvin cycle only.3. First stable product of above carbon pathway is 3-C compound phosphoglyceric acid (PGA).4. The leaves have diffused mesophyll and only one type of chloroplasts.5. Optimum temp, for photosynthesis is low to high.6. Photorespiration occurs.7. Photosynthetically less efficient.8. Carbon dioxide compensation point is high, about 50 ppm.9. Rate of C02 evolution in light is higher.10. Carbonic anhydrase activity is higher.11. Rate of translocation of end products of photosynthesis is low.12. Optimum temperature for growth is low to high.C4 PLANTS1.Example of these plants are sugarcane, maize, sorghum, Atriplex, Amaranthus etc..2.Carbon pathway in photosynthesis is C4—di- carboxylic acid pathway (Hatch-Slack path¬way).3.First stable product of above carbon pathway is 4—C compound Oxaloacetic acid (OAA).4.The leaves have ‘cane type’ of anatomy (Krantz anatomy) with compact mesophyll around the bundle sheath of vascular bundles and dimorphic chloroplasts. Those of bundle sheath are large and lack grana, while those of mesophyll are smaller and contain grana.5.Optimum temperature for photosynthesis is high.6.No photorespiration (or very little photorespiration).7.Photosynthetically more efficient.8.Carbon dioxide compensation point is low, 2 to 5 or even 0 ppm.9.Rate of C02 evolution in light is apparently none.10.Carbonic anhydrase activity is low.11.Rate of translocation of end products of photosynthesis is high.12.Optimum temperature for growth is high. | |
| 2953. |
Difference between endodermes and exodermis refers in chapter two |
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Answer» Mainly endoderm is outermost layer found in embryo and exodermis is same as endoderm There is nothing like exodermis,epidermis is the one |
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| 2954. |
What is the number of amino acids occurring in proteins? |
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Answer» Since each of the 20 amino acids is chemically distinct and each can, in principle, occur at any position in a protein chain, there are 20 × 20 × 20 × 20 = 160,000 different possible polypeptide chains four amino acids long, or 20n different possible polypeptide chains n amino acids long. Twenty-two amino acids are naturally incorporated into polypeptides and are called proteinogenic or natural amino acids. Of these, 20 are encoded by the universal genetic code. The remaining 2, selenocysteine and pyrrolysine, are incorporated into proteins by unique synthetic mechanisms. |
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| 2955. |
What is meiotic? |
| Answer» It is a process of cell division in sexually reproducing organism in which the no. Of chromosome reduces diploid to haploid in the formation of gametes | |
| 2956. |
How is resliration regulated |
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| 2957. |
How is respiration regulated |
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| 2958. |
What is 3-thylakoid lamellae? |
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| 2959. |
Which family has swollen placenta and oblique ovary ? |
| Answer» Solanaceae | |
| 2960. |
define syngammy and triple fussion? |
| Answer» Syngamy : In angiosperms one male gamete fuse with egg cell and forms zygote. This phenomenon is known as syngamy.Triple fusion : The fusion of male gamete with diploid secondary nucleus to produce triploid primary endosperms nucleus (PEN) is known as triple fusion. | |
| 2961. |
What is stamenate and pistilate |
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| 2962. |
Why angiosperm plant accure climax community in plant kingdom |
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| 2963. |
why do insectivores plant feed on insect? |
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| 2964. |
Explain root region |
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| 2965. |
Write down the introduction of mitochondria nd it\'s function nd it\'s structure point byes |
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| 2966. |
Define Morphology of Body Muscles |
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| 2967. |
what is locomotion |
| Answer» Locomotion is nothing but a movement of a body | |
| 2968. |
What are the significance of mycorrhizae |
| Answer» These are the fungal association with the roots of pinus | |
| 2969. |
Why water is wet |
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| 2970. |
What do u mean by plasma?? |
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| 2971. |
What is chemoreceptor |
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| 2972. |
What does help in blood clotting |
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| 2973. |
Is glucose a carbohydrate . If yes why? |
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| 2974. |
Describe stem modification and root modification and leaf modifications in detail. |
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| 2975. |
Chemo taxonomy |
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| 2976. |
what is five Kingdom classification ? and it was given by whom? |
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Answer» It is most accepted classification system given by R.H WHITTEKER.He classified the organisms in MONERA,PROTISTA,FUNGI,PLANTAE,(animalia kingdom) . Given by R.H. Wittaker |
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| 2977. |
Explain protesta? |
| Answer» All single celled eukaryotes are placed under protista . The boundaries of these Kingdom are not defined. Chrysophytes, dinoflagellate, euglenoids , slime moulds , and protozoans comes under protista. | |
| 2978. |
What is uphill transport? |
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| 2979. |
what is alternation of generation? explain. |
| Answer» Plants complete their life cycle in two phases -a diploid sporophyte phase and the haploid gametophyte phase. These two phase follow each other rigidly. This phenomenon is called alternation of generations. | |
| 2980. |
what is amylum star? |
| Answer» A star-shaped propagative body densely filled with starch and formed about the lower nodes of certain stoneworts. | |
| 2981. |
What is a bactia |
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| 2982. |
What is cambium |
| Answer» Cambium is a ring which is separated the xylem and phloem in the cell | |
| 2983. |
What is camboum |
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| 2984. |
Why bacteria and fungi excluded from plant kingdom in new classification? |
| Answer» Under plant kingdom only those organisms are placed which are multicellular ,eukaryotic,having cellulosic cell wall and autotrophic ( hetrotrophes - insectivorous plants).On the other hand, bacterias are prokaryotic unicellular . Fungi are eukaryotic multicellular but their cell wall is composed of chitin and majority of them are decomposers .That\'s why they are placed in separate kingdom. | |
| 2985. |
Could human body produce hormones without endocrine glands?? |
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| 2986. |
How many cotyledons are present in the embryo of wheat |
| Answer» Only one | |
| 2987. |
70s ribosomes |
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| 2988. |
What is Quorum sensing. Give a detail account of its sustainable development and its application |
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| 2989. |
In euglenoids which hetrotropes is present |
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| 2990. |
What is mean of RNA helix |
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| 2991. |
What is diatomaceous earth? |
| Answer» It is accumulation of silica walls of dead diatoms . It is used for polishing and filteration of syrups | |
| 2992. |
What are cynobacterias |
| Answer» Cyanobacteria also known as Cyanophyta, is a phylum of bacteria that obtain their energy through photosynthesis, and are the only photosynthetic prokaryotes able to produce oxygen. | |
| 2993. |
What is peptile bond |
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| 2994. |
Define living things |
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| 2995. |
What is limb? |
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| 2996. |
Liver is exocrine as well as endocrine.how? |
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| 2997. |
Compare the significance of mitosis and meiosis? |
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| 2998. |
What is cork cambium..?? |
| Answer» During secondary growth in dicot plants , theouter cortical layers and epidermal layers break down and needs to be replaced. Meanwhile cork cambium which is double layers thick and made up of rectangular cells develop in the cortex region. This layer begins to cut off new cells on both sides. The outer layer differentiates into phelloderm and inner one into cork/phellem | |
| 2999. |
Name the gland which secrete vasopressin hormone |
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| 3000. |
what is gymnosperms ! |
| Answer» Gymnosperms are the plants bearing naked seeds i.e. the ovules are not covered by ovary walls | |