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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.
| 5201. |
Alternation of generations |
| Answer» Alternation of generations, also called metagenesis or heterogenesis, in biology, the\xa0alternation\xa0of a sexual phase and an asexual phase in the life cycle of an organism. ... The two phases, or\xa0generations, are often morphologically, and sometimes chromosomally, distinct.\xa0All\xa0land plants\xa0have alternation of generations. In\xa0mosses\xa0and their relatives (Bryophytes), the haploid gametophyte is the dominant generation, and the diploid sporophytes are sporangium-bearing stalks growing from the gametophytes. | |
| 5202. |
What is key ? In first chapter of bio. |
| Answer» | |
| 5203. |
What are best topics for written projects as assingment in class 11th biology |
| Answer» On TAXONOMICAL AIDS because it is simple and vary simple to make it attractive . | |
| 5204. |
What is cambium? |
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Answer» Cambiym ring is present in conjoined closedvascular bundle. It is responsible for secondry growth in dicot plant Secondary grwoth in dicotyledonous plants hapeens because of cambium Ans plz |
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| 5205. |
In Plant Kingdom what is Level Of Oraganisation? |
| Answer» Plants\xa0(and animals, and fungi and some other organisms) are eukaryotes, so they all fall within the eukaryote domain. When we talk about\xa0plant\xa0classification, we can still use phylum and family and so on because these are categories within the eukaryote domain.\xa0Plants\xa0are living organisms belonging to the\xa0kingdom Plantae. They include familiar organisms such as trees, herbs, bushes, grasses, vines, ferns, mosses, and green algae. | |
| 5206. |
How the meristematic tissues are classified based on their location? |
| Answer» Meristemetic tissues are classified in 3 types-1.Apical meristems2.Intercallary meristem3.Lateral meristem | |
| 5207. |
What is pericycle...?? |
| Answer» | |
| 5208. |
How rootless plant absorb water and minerals ? |
| Answer» | |
| 5209. |
Define protista and its types |
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Answer» Protista is unicellular,prokaryotic,microscopic. It is inter related with other kingdom example:Decomposer like bacteria(algae) , heterotroph like Animalia(protozoan protista) and autotrophic like plantae ( slime mould) . It reproduce asexually by binnary fision and sexually by cellfision and zygotformation. Protista (1) photo synthetic autotroph a: chrysophytes (phytoplankton) b: dinoflagellated c: euglenoid (2) saprophytic a: slimemould ex: dictyostellium (3) protozoan a: Amoeboid b: flagellated c: cilliated d: sporozoan Types of protista are chrysophytes, dinoflagellates, slime moulds, euglenoids and protozoan Kingdom protista is a group of all single celled animals |
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| 5210. |
Salient features of protista |
| Answer» | |
| 5211. |
Diploblastic triploblastic explain |
| Answer» Diplomatic condition : two embryonic layers or two primary germ layers are present . Ex : porifera , coelentrata Triploblastic conditions : three embryonic germ layers are present .Ex : platyhelminthes to chordata | |
| 5212. |
How to prepare bio chapter |
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Answer» Practise question Buy understanding concepts Regular study |
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| 5213. |
what is other name of dentallium?✌ |
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Answer» Tusk cell |
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| 5214. |
Explain the life cycle haplontic, diplontic & haplo-diplontic |
| Answer» in haplontic gametophyte stage is dominant over the sporophyte stage . in diplontic sporophyte stage is dominant. in haplo diplonti non them is dominant they have equal share in life cycle of plant | |
| 5215. |
Mitosis and meiosis |
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Answer» Mitosis: division of cell into sepreted cell in which chromosome number remains same.Meiosis: division of cell that reduces chromosome number half. Mitosis is a equational division but meiosis is reductional division. |
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| 5216. |
Singnifiance of meosis and mitosis |
| Answer» Significance of Mitosis(i) It keeps the chromosome number constant and genetic stability in daughter cells, so the linear heredity of an organism is maintained. All the cells are with similar genetic constituents.(ii) It helps in growth and development of zygote into adult through embryo formation.(iii) It provides new cells for repair and regeneration of lost parts and healing of the wounds.(iv) It helps in asexual reproduction by fragmentation, budding, stem cutting, etc.(v) It also restores the nucleo-plasmic ratio.(vi) Somatic variations when maintained by vegetative propagation can play important role in speciation.Significance of meiosis:(i) From diploid cells haploid gametes are produced by this process.(ii) It restricts the multiplication of chromosome numbers in every generation.(iii) It results in variation among the offspring due to crossing over. | |
| 5217. |
What is homoestasis |
| Answer» Homeostasis, any self-regulating process by which\xa0biological\xa0systems tend to maintain stability while adjusting to conditions that are optimal for survival.Homeostasis Examples\tHumans\' internal body temperature is a great example of homeostasis. ...\tGlucose\xa0is the most basic form of\xa0sugar, and the only type the body can use directly. ...\tWhen bacteria or viruses that can make you ill get into your body, your lymphatic system kicks in to help maintain homeostasis. | |
| 5218. |
How important is the presence of air bladder in Pisces?? |
| Answer» Due to that they are light weight and can fly easily | |
| 5219. |
What are differences between White blood cells and red blood cells |
| Answer» Red blood cells\xa0do not have a nucleus on maturity. WBCs are characterized by the presence\xa0of\xa0a large central nucleus. Due to the presence\xa0of\xa0haemoglobin, these\xa0cells\xa0appear\xa0red in\xa0colour. These\xa0cells\xa0are colourless, as they do not have any pigment.\xa0White blood cells are\xa0larger than\xa0red blood cells, and unlike\xa0red blood cells, they\xa0have\xa0a normal nucleus and mitochondria. | |
| 5220. |
Where do photosynthetic bacteria store chlorophyll? |
| Answer» In green plants\xa0chlorophyll\xa0occurs in membranous disklike units (thylakoids) in organelles called chloroplasts.\xa0Chlorophyll\xa0is one of the most important pigments in nature. Chloroplasts\xa0are\xa0found in plant leaves and contain the pigment\xa0chlorophyll. This green pigment absorbs light energy needed for\xa0photosynthesis\xa0to occur. Chloroplasts contain an internal membrane system consisting of structures called thylakoids that serve as the sites of conversion of light energy to chemical energy. | |
| 5221. |
Why is mitosis is called equational division? |
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Answer» Since the chromosome number remains the same in parents cell as well as daughter cell because in mitosis , number of chromosomes remain same (no reduction in number of chromosomes take place). |
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| 5222. |
Why are gas vacuoles named so? |
| Answer» Because they provide buoyancy and upthrust force to cells. | |
| 5223. |
Where is the volkman\'s canals are found? |
| Answer» In bones between two haversian canals | |
| 5224. |
Why calcified cartilage is formed by the calcification of hyaline cartilage? |
| Answer» | |
| 5225. |
The technical term for stamens are united in one bunch |
| Answer» Monoadelphous | |
| 5226. |
Schematic diagram of woody angiosperms secondary growth |
| Answer» The increase in girth of stems of woody angiosperms is called secondary growth. The tissue involved in secondary growth are the two lateral meristems?vascular cambium and cork cambium.(i) Vascular cambium is a vascular layer present between xylem and phloem (vascular tissues). It is responsible for the cutting off vascular tissues, later it forms a complete ring.(ii) The cambial ring becomes active and begins to cut off new cells, both towards the inner and the outer sides.(iii) The cells cut off towards pith, mature into secondary xylem and the cell cut of towards periphery, mature into secondary phloem.(iv) The cambium is generally more active on the inner side than the outer. As a result, the amount of secondary xylem produced is more than the secondary phloem and soon forms a compact mass.(v) The primary and secondary phloem get gradually crushed due to the continued formation and accumulation of secondary xylem.(vi) The primary xylem however, remains more or less intact, in or around the centre.(vii) At some places, the cambium forms a narrow band of parenchyma, which passes through the secondary xylem and the secondary phloem in the radial directions. These are the secondary medullary rays.(viii) The stem continues to increase in girth due to the activity of vascular cambium. | |
| 5227. |
Can you please explain about fluid mosaic model of plasma membrane in short. |
| Answer» It was proposed by Singer and Nicolson(1972). P.M allows neutral salts and water to pass by diffusion known as passive transport.Polar molecules need a protein carrier of the wall to pass which is known as active transport | |
| 5228. |
The principal function of blood vascular system in cockroach is |
| Answer» Cockroaches are equipped with\xa0open type\xa0circulatory system. In this, blood is pumped by heart and flows open in body cavity. Organs floating in blood get nutrition directly. Supply of oxygen is independent through a separate\xa0closed\xa0type\xa0respiratory system.To make it more explicit, the circulatory system of cockroaches is primitive consisting of only heart and primary artery. Contrary to higher animals the oxygen supply is not dependent on circulatory system. For this there is a well developed closed respiratory system for assured exchange of gases directly by the tissues. | |
| 5229. |
What is taxon ? |
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Answer» Rank Categories in taxonomy |
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| 5230. |
Which type of levaes are present in pigeon pea sipmle or compund leaves |
| Answer» Pigeonpea is predominantly a crop of tropical areas mainly cultivated in\xa0semi-arid regions of India. Pigeonpea can be grown between 14°N and 28°N latitude, with a\xa0temperature\xa0ranging from 26° to 30°C in the rainy season (June to October) and 17° to 22°C in the postrainy (November to March) season. It has deep tap roots hence it can tolerate drought and poor soil conditions.\xa0Edible\xa0parts of\xa0pigeon pea\xa0are the seeds, seedpods,\xa0leaves, and young\xa0shoots.\xa0Pigeon pea\xa0is as well known for its medicinal uses.\xa0Leaves\xa0are used as treatment of coughs, bronchitis, diarrhoea, haemorrhages, sores, and wounds. | |
| 5231. |
Function of redula in mollusca |
| Answer» The radula is a file-like rasping organ found in molluscs. It helps in scraping food. It also used for creating depression in rocks. The radula is the only means of consuming food and plays a pivotal role in the survival of the animal. | |
| 5232. |
How many types of phyllotaxy are there? |
| Answer» It is generally of 3 types1)alternate phyllotaxy2)opposite phyllotaxy3)whorled phyllotaxy | |
| 5233. |
Major difference between eukaryotic and prokaryotic |
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Answer» It is not major difference (duffer girl) \tProkaryotesEukaryotesAlways unicellular and the size lies in between 0.2- 2.0 micrometers in diameterMostly multi-cellular and the size lies in between 10 – 100 mm in diameterCell wall usually present; chemically complex in natureWhen Cell wall present, chemically simple in nature\xa0Nucleus is absent\xa0Nucleus is presentThese cells consist of ribosomes which are smaller in size and circular in shape when compared to the cells of eukaryotes.The ribosomes of eukaryotes are larger in size and are linear in shape.DNA arrangement Circular in shapeDNA arrangement Linear in shapeMitochondria is absent\xa0Mitochondria is presentThe cytoplasm in prokaryotes does not contain the endoplasmic reticulumIn this, the cytoplasm has the endoplasmic reticulumPlasmids Present in prokaryotesPlasmidsVery rarely found in eukaryotessmall ribosomes.\xa0large ribosomes.In this, the lysosome, mesosome, and centrosome is absentMesosome, Lysosomes, and centrosomes are usually present in Eukaryotes\t |
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| 5234. |
Which suffix is used for category species in plants? |
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| 5235. |
What is charcomer |
| Answer» | |
| 5236. |
Who is the writter of Book GENERA PLANTARUM ? |
| Answer» May be c linneus | |
| 5237. |
Difference between stomata of monocot and stomata of dicot |
| Answer» The difference between the stomata of monocot and dicot are -:\xa01. Stomata distribution - In monocots stomata are equally distributed while in the dicots the stomata is usually found on the lower surface of the leaf.2. Guard cell shape - In monocots the guard cells are dumbell shaped while in the dicots they are kidney or bean shaped. | |
| 5238. |
Difference between conjoint closed and conjoint open vascular bundle |
| Answer» In conjoint open v.b we have a layer of cambium whereas in conjoint close there is no cambium | |
| 5239. |
Difference between dicot stem and Dicot root |
| Answer» \tDicot stemDicot root1. Cells are thick walled.1. Thin walled.2. Epidermal hairs are present and are multicellular.2. Unicellular root hairs are present.3. Cuticle present.3. Cuticle Absent.4. Stomata present.4. Stomata Absent.5. Hypodermis present.5. Hypodermis Absent.6. Endodermis wavy, deposited with starch.6. Circular, contains casparian strips and passage cells.\t\xa0 | |
| 5240. |
Why are the classification systems changing every now and then |
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Answer» Discovery of new species and advancement of technology Given in ncert book |
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| 5241. |
Name the pores through which guttation occur??????????? |
| Answer» Guttation\xa0is when a plant pushes water out\xa0through\xa0tips of the leaves of plants. These are special\xa0pores\xa0called hydathodes.\xa0Guttation is when water is secreted from the tips of the leaves of plants. Guttation happens in certain plants that have vascular systems, such as grass, wheat, barley, tomatoes, strawberries, and other small plants. Since guttation relies on pressure, it can\'t occur in large plants, such as trees, because the pressure required to force the water out is too large.Guttation happens at night when the soil is very moist and the roots absorb water. If there is too much water, root pressure causes the water to squeeze out of the plant and onto the tips of the leaves or the blades of the plant. As water from soil passes through the guttation process, it picks up minerals, enzymes and other chemicals and is called\xa0xylem sap. | |
| 5242. |
Plants have diff. Name in diff. Regions of worlds .....how do botanist solve this problem ???????? |
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Answer» Thnku so much Botanist solve this problem by using scientific name for each plant species you can remember all species then this problem will easy Botanist solve this problem by using scientific names for each plant speciesEg Mango: Mangifera indica |
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| 5243. |
Why ascomycetes called sac fungi |
| Answer» Ascomycetes are called sac fungi because they have sac like structures in which the spores are formed. | |
| 5244. |
Write two or three difference between racemose and cymose..?? |
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Answer» Cymose-1. the growth of main axis is limited. 2.the main axis produces lateral axis which also bears flower on it\'s tip.3.in this type of inflorescence the upper flower or central flower is large colder and opens earlier 1. The growth of main axis is unlimited i;e the main axis doesn\'t bear flower in it\'s tip.2. The main axis bears laterally many flowers.3.the lower flower or peripheral flower is larger ,colder and opens earlier |
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| 5245. |
Mitochondria have own DNA and have a cell division. Why we can\'t say it is a prokarytic cell |
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Answer» It is a cell organelles Its a cell organelle Mitochondria is not a cell . It is a endo membrane system |
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| 5246. |
What do you mean by shoot |
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Answer» Apical portion of root Part which is present above the root is known as shoot |
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| 5247. |
Describe the process of secondary growth in dicot stem |
| Answer» | |
| 5248. |
Difference between collenchyma and sclerenchyma |
| Answer» Collenchyma – The cells of collenchyma tissue are living, elongated and irregularly thickened at the corners. There is very little or no intercellular space. It allows easy bending in various parts of a plant (leaf, stem) without breaking. Thus, provides flexibility to the plant. It also provides mechanical support to plants. Sclerenchyma – The cells of sclerenchyma tissue are dead. They are long and narrow as the walls are thickened due to deposition of lignin. The walls of cells are so thick that there is no internal space inside the cell. This tissue is present in stems, around vascular bundles, in the veins of leaves and in the hard covering of seeds and nuts. It provides strength to the plant parts and makes the plant hard and stiff. | |
| 5249. |
Which part of the flower called saprophyte |
| Answer» Hello | |
| 5250. |
Write two unique features of mammals |
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Answer» They have outer pinnae two unique features of mammals are:-1) have hairs all over their body 2)they can regulate their body temperature They have mammary glands |
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