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 1.  An attribute found in plants but not animals is (1) Metabolism (2) Sexual reproduction (3) Autotrophy (4) Asexual reproduction ANS: An attribute found in plants but not animals is Autotrophy. Autotrophic organisms are those that produce their own food through the process of photosynthesis or chemosynthesis. This is a characteristic feature of plants, algae, and some bacteria, which are capable of making their own food using simple inorganic substances like carbon dioxide, water, and sunlight. 2.  Which of the following is less general in characters as compared to genus (1) Species (2) Family (3) Class (4) Division ANS: The taxonomic category that is less general in characters as compared to genus is species. A species is a group of organisms that share similar characteristics and can interbreed to produce fertile offspring. It is a more specific category than the genus, which includes a group of related species. 3.  An attribute found in plants but not...

1.Male sterility is widely used in crops such as maize, sunflower for hybrid production. Male sterile plants are created by introducing a gene encoding- (a) Barnase protein (b) TA29 (c) Barstar protein (d) Coat protein EXPLANATION: (a) Barnase gene was first introduced to produce male sterility in 1990. it is effective fertility restoration system in barstar. it is genetic and heritable. 2. Bodybuilders prefer to drink buffalo milk to build muscle mass. Determine the reason for this? (a) Easier to digest (b) Lower fat content (c) Higher calcium and phosphorus content (d) Balanced calorie source EXPLANATION: (c) buffalo milk has high-fat content, higher calcium and phosphorus content 3. An industrially important secondary metabolite which is used as a red pigment in lipsticks and dye for silk is obtained from- (a) Datura stramonium (b) Lithospermum erythrorhizon (c) Digitalis lanata (d) Coptis japonica EXPLANATION: (b) Lithospermum erythrorhizon commonly known as purple groomwell, red ...

1. (a) Draw two different possible structures of a saturated hydrocarbon having four carbon atoms in its molecule. What are these two structures of the hydrocarbon having same molecular formula called? Write the molecular formula and the common name of this compound. Also, write the molecular formula of its alkyne.  OR  (b) (i) Write the molecular formula of benzene and draw its structure.   (ii) Write the number of single and double covalent bonds present in a molecule of benzene.   (iii) Which compounds are called alkynes?  Explanation: two possible structures of hydrocarban these structures are called isomers. isomers have the same molecular formula but different structural arrangements. the molecular formula of the alkyne is  OR i) the molecular formula of benzene is  C6H6 ii) there are double bonds and nine single bonds in benzene. iii) Alkynes are organic molecules made of the functional group carbon-carbon triple bonds and are wri...