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.
| 21201. |
Question : All eukaryotic unicellular organisms belong to (A) Monera (B) Protista (C) Fungi (D) Bacteria |
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Answer» MONERA Monera includes prokaryotic like bacteria, unicellular ORGANISM. Fungi are eukaryotic but are MOSTLY multicellular (exception yeast is unicellular). |
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| 21202. |
Question : All elements that are present in a plant need not be essential to its survival' Comment. |
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Answer» Solution :Most of the minerals PRESENT in soil can enter plants through roots. In fact, more than sixty elements of the 105 discovered so far are found in different plants. All elements from such elements are not essential because some are macronutrients and some are micronutrients. e.g. (1) Some elements are known as structural elements of cells (C,H,O,N) (2) Some are components of ENERGY related compounds e.g Mg (3) Some activate or inhibit enzymes Zn,Mo,Mg (4) Some elements can alter the OSMOTIC potential (5) Some elements are essential for growth and reproduction. (6) Some are as part of metabolism. THUS all elements are not essential for survival. |
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| 21203. |
Question : All elements that are present in a plant need not be essential to its survival. Comment |
| Answer» Solution :here are some ELEMENTS which most plants do not require for their survival. These are SODIUM, ALUMINIUM. SILICON, chlorine, gallium, selenium and cobalt. | |
| 21204. |
Question : All desmids are found in marine habitat but diatoms are found as phytoplankton large in deep lakes . |
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Answer» |
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| 21205. |
Question : State true or false. All cells contain the same kinds of proteins in the samerelative locations. |
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Answer» |
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| 21206. |
Question : All cells have a cell wall that regulates the passage ofmolecules into and out of the cell. |
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Answer» |
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| 21207. |
Question : All cell membranes of multicellular organisms incorporate : |
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Answer» TRANSPORT PROTEINS |
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| 21209. |
Question : All bryophytes are |
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Answer» STRICTLY homosporous |
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| 21210. |
Question : All bone marrow is red and involved in haemopoiesis in |
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Answer» OLD people |
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| 21212. |
Question :Allarteriescarry____ exceptthe pulmonaryartery . |
| Answer» SOLUTION :PULMONARY ARTERY. | |
| 21214. |
Question : All areherphroditic animals in which of the following sets of animals ? |
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Answer» Pheretima , Taenia , SYCON , ASCARIS |
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| 21215. |
Question : All amniotes |
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Answer» have 10 PAIRS of cranial NERVES |
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| 21216. |
Question : These are cylindrical meristems |
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Answer» CORK CAMBIUM |
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| 21217. |
Question : All algae have these photosynthetic pigments in common |
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Answer» CHLOROPHYLL a and chlorophyll B |
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| 21218. |
Question : All algae contain: |
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Answer» CHLOROPHYLL a and chlorophyll B |
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| 21219. |
Question : Alimentary canal in Ascheminthes has |
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Answer» SINGLE OPENING |
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| 21220. |
Question : Alimentary canal is complete with well developed ............ in Aschelminthes. |
| Answer» SOLUTION :MUSCULAR PHARYNX | |
| 21221. |
Question : Align the taxonomical categories in the ascending order. GEnus, order, phylum, species, family, class, kingdom |
| Answer» Solution :SPECIES`rarr`genus`rarr`family`rarr`ORDER`rarr`CLASS`rarr`phylum`rarr`KINGDOM` | |
| 21222. |
Question : Alimentary canal has single opening in |
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Answer» ECHINODERMS |
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| 21223. |
Question :Alien species invasion is a threat to endemic species - substantiate this statement. |
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Answer» SOLUTION :Exotic species (non-native, alien) are organisms often introduced purpose, as biological control agents and other uses. They often becomes invasive and DRIVE away the local species and is considered as the second major cause for extinction of species. Exotic species have proved harmful to both aquatic and terrestrial ecosystems. Examples are as follows: (i) Tilapia fish (Jilabi kendai) (Oreochromis mosambicus) introduced from east coast of South Africa in 1952 for its HIGH productivity into Kerala's inland waters, became invasive, due to which the native species such as Puntius dubious and Label kontius local extinction. (ii) Amazon sailfin catfish is responsible for destroying the fish population in the wetlands of Kolkata. (iii) The introduction of the Nile Perch, a predatory fish into Lake Victoria in East Africa led to the extinction of an ECOLOGICALLY unique assemblage of more than 200 nature species of cichlid fish in the lake. (iv) African apple snail (Achatina fulica) is the most invasive among all alien fauna in India. This mollusc was first reported in the andamman and Nicobar Islands. It is now found across the country and threatens thehabitat of several native species. Moreover it is becoming a vicious pest in vegetable farms. (v) Exotic earthworms compete for food with native varieties and deplete their population in soil. (vi) Papaya Mealy Bug (Paracoccus marginatus) is native of Mexico and central America, is BELIEVED to have destroyed huge crops of papaya in Assam, West Bengal and Tamil Nadu. |
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| 21224. |
Question : Algin is the product of |
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Answer» GREEN algae |
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| 21225. |
Question : Algin is a phycocolloid, obtained from the cell walls of |
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Answer» CHLAMYDOMONAS, Volvox |
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| 21227. |
Question : Algal member with heterogametes |
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Answer» Cladophora |
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| 21228. |
Question : Algal partner of lichen is ……………. . |
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Answer» PHYCOBIONT |
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| 21229. |
Question : Algal component in a lichen |
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Answer» is CALLED mycobiont |
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| 21230. |
Question : Algae with multinucleate, haploid condition is (A) Mucor(B) Vaucheria (C) Spirogyra(D) Rhizopus |
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Answer» A, B |
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| 21231. |
Question : Algae which grow on animal and also occur on shells of molluscs or other invertebrates are called |
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Answer» parasitic |
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| 21232. |
Question : Algae which is used as food by space travellers is |
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Answer» Chlorella |
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| 21233. |
Question : Algae were grouped into how many kingdoms according to Whittaker? |
| Answer» ANSWER :B | |
| 21234. |
Question : Algae having heterogametes are |
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Answer» FUNARIA and Pteris |
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| 21235. |
Question : Algae having coenocytic condition is |
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Answer» Wuchereria |
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| 21236. |
Question : Algae have cell wall made up of |
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Answer» CELLULOSE, galactans and mannans |
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| 21237. |
Question : Algae have cells made up of |
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Answer» CELLULOSE, galactans andmannans |
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| 21238. |
Question : Algae growing on shells and bodies of animals are called |
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Answer» Epiphytic |
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| 21239. |
Question : Algae consistof ……….like plant body . |
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Answer» hyphae |
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| 21240. |
Question : Algae are useful to main in a variety of ways . Suggest four uses of algae . |
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Answer» Solution :Uses of Algae : (i) As FOOD : Algae like Uilva spirogyra etc . Aer edible Chlorella can be grown to provide human food rich in protein lipid carbohydrates vitamins and minerals . (ii) As manure : Calcium containing green algae like chara is USEFUL in acidic soils while some other varieties are useful in ALKALINE soils . (iii) In sewage oxidation tanks : Algae like Chlamydomonas Chlorella are inoculated in sewage oxidation tanks to provide REQUIRED oxygen to decompose FUNGI and bateria . Antibiotic : Chlorella contains an antibiotic called chlorellin . |
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| 21241. |
Question : Algae, bryophyte, and pteridophytes resemble with each other in which one of the following feature? |
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Answer» Gametophytic plant body |
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| 21242. |
Question : Algae are useful because they |
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Answer» are LARGE in number |
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| 21243. |
Question : Algae are placed in |
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Answer» THALLOPHYTA |
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| 21244. |
Question : Algae are known to reproduce asexually by variety of spores under different environmental conditions. Name these spores and the conditions under which they are produced. Asexual reproduction in algae is very common mean of reproduction. |
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Answer» Solution :Algae and their spores exhibit enormous diversity and they very greatly in their LEVEL of specialisation. Asexual reproduction by spores and their types are described below (a) By Zoospores These are mobile flagellated spores. In which protoplasm of each vegetative cell undergoes repeated longitudnal division either into 2 or 4 RARELY 8 or 16 daughter protoplast, The parent cell loses its flagella, before the onset of division After the last series of division, each daughter protoplast secretes a cell wall and neuromotor apparatus that develops two flagella, eyespots and contractile vaculoes, The, each of the dauther cell formed resembles the parent cell in all aspects except the small size Formation of zoospores is very common under favourable conditions (b) By Aplnospores These are the non-motile spores. They are asexually formed with in a cell, in this the protoplast withdraws itself from the parent wall, rounds up and develops into aplanospores which may either germinate directly or may divide to produce zoospores. (c) By Hypnospores in this, the protoplasm withdraws from the cell, rounds up an develop a thick wall under unfavorable condition. These resting spores are called as hypnospores. They are red in colour due to presence of haematochrome E.g., Vaucheria, Ulothrix (d) Akinetes These are special vegetative thick walled cells present in the filaments which remain under dorment state and return to germination under favourable condition and can ALSO with stand unfavourable condition as Spirogyra (e) Statospores The are thick walled spores PRODUCED in diatoms (f) Neutral spores In some algae, the protoplastm of vegetative cells directly functions as spores called as neutral spores (e.g., Ectocarpus). |
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| 21245. |
Question : Algae are known to reproduce asexually by variety of spores under different environmental conditions. Name these spores and the conditions under which they are produced. |
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Answer» Solution :Algae reproduce asexually by VARIETY or spores under different environmental conditions. These spores and the conditions under which they are produced are as follow : (a) Zoospores : These are thin walled, flagellated motile spores as they are equipped with FLAGELLA. .Conditions under which it is produced : These are formed under favourable conditions and spread by wind. Aplanospores : These are thin walled nonmotile spores and lack flagella. Conditions under which it is produced : These are formed under unfavourable conditions. Hypnospore : These sporas have thick cell wall to TIDE over unfavourable conditions. Conditions under which it is produced : These are formed under unfavourable conditions. (d) Akinetes : These are formed from VEGETATIVE cells and serve as resting cells. Conditions under which it is produced : Formed under unfavourable conditions. (e) Statospore : These are similar to akinetes and are FOUND in diatoms. Conditions under which it is produced : Formed under unfavourable conditions. |
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| 21246. |
Question : Algae are classfied into three classes on the basis of |
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Answer» Type of PIGMENT |
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| 21247. |
Question : Alga that is useful for prolonged space flight for liberation of oxygen, consumption of CO_(2), disposal of wastes and formation of food is |
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Answer» Ulva |
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| 21248. |
Question : Alexander Flemming disocovered penicillin in 1928 while working with |
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Answer» Streptomyces |
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| 21250. |
Question : Aleurone layer : |
| Answer» SOLUTION :In MAIZE SEED the outer COVERING of endosperm separates the embryo and proteinous layer called Aleurone layer. | |