Description : Assertion :- Branching descent and Natural selection are the two key concepits of Darwinian theory of evolution. Reason :- Darwinism is able to explai
Last Answer : Assertion :- Branching descent and Natural selection are the two key concepits of Darwinian theory of ... D. If both Assertion & Reason are false.
Description : Occurrence of endemic species in South America and Australia is due to (a) these species has been extinct from other regions (b) continental separation (c) there is no terrestrial route to these places (d) retrogressive evolution.
Last Answer : (b) continental separation
Description : Thorn of Bougainvillea and tendril of Cucurbita are examples of (a) vestigial organs (b) retrogressive evolution (c) analogous organs (d) homologous organs.
Last Answer : (d) homologous organs.
Description : A specific BRCA1 cancer-predisposing gene mutation seems to occur more frequently among women of which descent? a) Ashkanazi Jewish Expression of the BRCA1 gene is an example of ... of treatment for tuberculosis) are at significantly increased risk for developing isoniazid-induced hepatitis.
Last Answer : a) Ashkanazi Jewish Expression of the BRCA1 gene is an example of inheritance in the development of breast cancer.
Description : Read the assertion and reason carefully to mark the correct option in question. 1. Assertion: Cell is the fundamental structural and functional unit o
Last Answer : Read the assertion and reason carefully to mark the correct option in question. 1. Assertion: Cell is ... . D. If both Assertion & Reason are false.
Description : Assertion :- Tasmanian wolf and Placental wolf are the good example of convergent evolution. Reason :- More than one adaptive radiation apperared to h
Last Answer : Assertion :- Tasmanian wolf and Placental wolf are the good example of convergent evolution. Reason :- ... D. If both Assertion & Reason are false.
Description : The concept of chemical evolution is based on (a) interaction of water, air and clay under intense heat (b) effect of solar radiation on chemicals (c) possible origin of life by combination of chemicals under suitable environmental conditions (d) crystallisation of chemicals.
Last Answer : (c) possible origin of life by combination of chemicals under suitable environmental conditions
Description : The most accepted line of descent in human evolution is
Last Answer : The most accepted line of descent in human evolution is A. Australopithecus `to` Ramapithecus `to` ... erectus `to` Homo habilis `to` Homo sapiesn
Description : 8 The most accepted line of descent in human evolution is : a) Ramapithecus→Homo habilis→Homo erectus→Homo sapiens b) Australopithecus→ Homo erectus → Homo habilis →Homo sapiens c) Australopithecus → Ramapithecus → Homo sapiens → Homo erectus d) Neanderthal man→ Ramapithecus →peking man→Homo sapiens
Last Answer : ANS: a Ramapithecus→Homo habilis→Homo erectus→Homo sapiens
Description : Retrogressive metamorphosis occurs in
Last Answer : Retrogressive metamorphosis occurs in A. Balanoglossus ( Tomaria larvae ) B. Amphioxus C. Ascidian tadpole larva of Herdmania D. Glosobalanus
Description : Assertion :- Analogous structures are a result of convergent evolution. Reason :- Different strutures evolving for the same function and hence having
Last Answer : Assertion :- Analogous structures are a result of convergent evolution. Reason :- Different strutures ... . If both Assertion & Reason are false.
Description : Assertion: Population ecology is a link of ecology to population genetics and evolution. Reason: Natural selection operates at population level to evo
Last Answer : Assertion: Population ecology is a link of ecology to population genetics and evolution. Reason: Natural ... and Reason are false, then mark (4).
Description : Assertion :- Homologous organs suggest same origin. Reason :- Organs which are simillar in function and dissimilar in internal morphology called as Ho
Last Answer : Assertion :- Homologous organs suggest same origin. Reason :- Organs which are simillar in function and ... D. If both Assertion & Reason are false.
Description : Assertion :- Big-Bang theory lalks of a singular huge explosion unimaginable in physical terms to explain the origin of universe. Reason :- Due to big
Last Answer : Assertion :- Big-Bang theory lalks of a singular huge explosion unimaginable in physical terms to explain ... D. If both Assertion & Reason are false.
Description : Assertion : Originwise hair are epithelial tissue which are of ectodermal origin. Reason : Epithelial tissue can be formed from mesoderm and endoderm
Last Answer : Assertion : Originwise hair are epithelial tissue which are of ectodermal origin. Reason : Epithelial ... . If both Assertion & Reason are false.
Description : Assertion : Adrenal gland have dual origin. Reason : The aderenal cortex develops from endoderm while adrenal medulla develops from mesoderm.
Last Answer : Assertion : Adrenal gland have dual origin. Reason : The aderenal cortex develops from endoderm while ... D. If both Assertion and Reason are false.
Description : In the event of cabin depressurization, the actions of the pilot will be to: a. Immediately commence a diversion to a suitable alternate b. Increase engine power to provide additional ... a descent to an altitude where the supplemental oxygen supply is sufficient for all crew and passengers
Last Answer : d. Commence a descent to an altitude where the supplemental oxygen supply is sufficient for all crew and passengers
Description : Assertion: Epstein - Barr virus is an oncovirus. Reason: It stimulates the growth of cancer.
Last Answer : Assertion: Epstein - Barr virus is an oncovirus. Reason: It stimulates the growth of cancer. A. If ... D. If both the assertion and reason are false
Description : Assertion: The genetic material in Tobacco mosaic virus in RNA. Reason: RNA is a type of nucleic acid.
Last Answer : Assertion: The genetic material in Tobacco mosaic virus in RNA. Reason: RNA is a type of nucleic acid. A. ... is wrong D. If both As and R are wrong.
Description : The eye of octopus and eye of cat show different patterns of structure, yet they perform similar function. This is an example of (a) analogous organs that have evolved due to convergent ... evolved due to convergent evolution (d) homologous organs that have evolved due to divergent evolution.
Last Answer : (a) analogous organs that have evolved due to convergent evolution
Description : The similarity of bone structure in the forelimbs of many vertebrates is an example of (a) homology (b) analogy (c) convergent evolution (d) adaptive radiation.
Last Answer : (a) homology
Description : The similarity of bone structure in the forelimbs of many vertebrates is an example of (1) Homology (2) Analogy (3) Convergent evolution (4) Adaptive radiation
Last Answer : (1) Homology
Description : Which one of the following is not a fundamental activity for processes in engineering ? a) Verification b) Validation c) design and implementation d) evolution e) specification
Last Answer : a) Verification
Description : Assertion: Anatomy deals with the structure and functions of the organisms. Reason: All the plants are autotrophic.
Last Answer : Assertion: Anatomy deals with the structure and functions of the organisms. Reason: All the plants are autotrophic ... D. If A is wrong and R is right
Description : Assertion: The term biology ws coined by Lamarck and Travernis. Reason: Morphology deals with the external form and structure of organisms.
Last Answer : Assertion: The term biology ws coined by Lamarck and Travernis. Reason: Morphology deals with the external form ... D. If both As and R are wrong.
Description : Assertion : Corpus albicans is an inactive structure which is found in the ovary . Reason : Corpus albicans secretes the progesterone hormone after ov
Last Answer : Assertion : Corpus albicans is an inactive structure which is found in the ovary . Reason : Corpus ... D. If both Assertion & Reason are False.
Description : Assertion : Placenta is combined structure of foetal tissue & maternal tissue Reason : Placenta formation is completed before 6 weeks of pregnancy .
Last Answer : Assertion : Placenta is combined structure of foetal tissue & maternal tissue Reason : Placenta formation ... . If both Assertion & Reason are False.
Description : Why didn't Charles Darwin use the word "evolution" in his original publication of On the Origin of Species?
Last Answer : According to this, Darwin preferred descent with modification', in part because evolution already had been used in the 18c. homunculus theory of embryological development (first proposed under this name by Bonnet, ... in part because it carried a sense of progress' not found in Darwin's idea.
Description : Why is Creation Science baned from schools and Evolution theory is tought as the only truth of origin? Why the bias?
Last Answer : Because creationism isn’t a science.
Description : Who predicted the origin and evolution of the universe ?
Last Answer : Astrologers are the ones who predict the origin and evolution of the universe.
Description : Oparin's theary about origin of life' is related to - (1) chemical evolution (2) physical evolution (3) biological evolution (4) artificial evolution
Last Answer : (1) chemical evolution Explanation: Alexander Oparin was a Russian biochemist, notable for his contributions to the theory of the origin of life on Earth, and particularly for the primordial soup theory of the evolution of life from carbon-based molecules.
Description : Assertion `:-` Angiotensin II, activates the adrenall cortex to release aldosterone. Reason `:-` Aldosterone causes reabsorption of `Na^(o+)` and wate
Last Answer : Assertion `:-` Angiotensin II, activates the adrenall cortex to release aldosterone. Reason `:-` ... D. If both Assertion & Reason are false.
Description : Assertion `:-` Conditional reabsorption of `Na^(o+)` and water takes place in DCT. Reason `:-` DCT is also capacble of selective secretion of hydrogen
Last Answer : Assertion `:-` Conditional reabsorption of `Na^(o+)` and water takes place in DCT. Reason `:-` ... False. D. If both Assertion & Reason are false.
Description : Assertion (A): UV radiation causes photodissociation of ozone into `O_(2)` and O, thus causing damage to the stratospheric change. Reason (R): Ozone h
Last Answer : Assertion (A): UV radiation causes photodissociation of ozone into `O_(2)` and O, thus causing damage ... true but reason is wrong D. Both are wrong
Description : Assertion :- At constant temp `0^(@)C` and 1 atm, the change `H_(2)O(s)rarr H_(2)O(l)Delta H` and `Delta E` both are zero. Reason :- During isothermal
Last Answer : Assertion :- At constant temp `0^(@)C` and 1 atm, the change `H_(2)O(s)rarr H_(2)O(l) ... Reason is False. D. If both Assertion & Reason are false.
Description : Assertion :- At constant pressure for the change `H_(2)O(s)rarr H_(2)O(g)` work done is nwgative. Reason :- During phase transition work done is alway
Last Answer : Assertion :- At constant pressure for the change `H_(2)O(s)rarr H_(2)O(g)` work done is ... is False. D. If both Assertion & Reason are false.
Description : Assertion :- Oxidation number of carbon in `CH_(2)O` is zero. Reason :- `CH_(2)O` (formaldehyde) is a covalent compound.
Last Answer : Assertion :- Oxidation number of carbon in `CH_(2)O` is zero. Reason :- `CH_(2)O` (formaldehyde ... is False. D. If both Assertion & Reason are False.
Description : Assertion :- Oxidation state of Hydrogen is `+1` in `H_(2)O` while `-1` in `CaH_(2)`. Reason :- `CaH_(2)` is a metal hydride and for metal hydrides, h
Last Answer : Assertion :- Oxidation state of Hydrogen is `+1` in `H_(2)O` while `-1` in `CaH_(2)`. ... Reason is False. D. If both Assertion & Reason are False.
Description : Assertion :- O.N. of carbon in `H-C-=N` is `+4`. Reason :- Carbon always shows an O.N of +4.
Last Answer : Assertion :- O.N. of carbon in `H-C-=N` is `+4`. Reason :- Carbon always shows an O.N ... Reason is False. D. If both Assertion & Reason are False.
Description : Assertion : The menstrual flow results due to breakdown of endometrial lining of the uterus and its blood vessels . Reason : Rapid fall in the level o
Last Answer : Assertion : The menstrual flow results due to breakdown of endometrial lining of the uterus and its blood ... D. If both Assertion & Reason are False.
Description : Assertion : o-Hydrozybenaldehyde is less soluable in water than p-Hydroxybenzalbenzaldehye. Reason : Intra molecular hydrogen bonding in o-Hydrozbenza
Last Answer : Assertion : o-Hydrozybenaldehyde is less soluable in water than p-Hydroxybenzalbenzaldehye. Reason : Intra ... D. Assertion is false, Reason is true
Description : Assertion (A): o-phenol sulphonic acid on heating at `100^(@)C` changes to p-phenol sulphonic acid. Reason : Sulphonation of phenol is a reversible pr
Last Answer : Assertion (A): o-phenol sulphonic acid on heating at `100^(@)C` changes to p-phenol sulphonic acid. ... in correct D. A is incorrect but R is correct
Description : Assertion: `p`-nitrophenol is a stronger acid than `o`-nitrophenol. Reason: Intramolecular hydrogen bonding makes the `o`-isomer weaker than the `p-`i
Last Answer : Assertion: `p`-nitrophenol is a stronger acid than `o`-nitrophenol. Reason: Intramolecular hydrogen bonding ... D. A is incorrect but R is correct
Description : Assertion (A): Diethyl ether reacts with hot Conc `H_(2)SO_(4)` and gives ethyl hydrogen sulphate Reason (R): The reaction involves cleavage of C-O bo
Last Answer : Assertion (A): Diethyl ether reacts with hot Conc `H_(2)SO_(4)` and gives ethyl hydrogen sulphate Reason (R ... R is false D. A is false but R is true
Description : Assertion: (A) Ethers are relatively inert when compared to `C_(2)H_(5)OH` Reason (R): The hybridization of C and O in `CH_(3)-O-CH_(3) is SP^(3)`
Last Answer : Assertion: (A) Ethers are relatively inert when compared to `C_(2)H_(5)OH` Reason (R): The hybridization of ... R is false D. A is false but R is true
Description : Assertion:Among chalcogens, catenation tendency is maximum for sulphur Reason: S-S bond is stronger than O - O single bond.
Last Answer : Assertion:Among chalcogens, catenation tendency is maximum for sulphur Reason: S-S bond is stronger ... is not correct and Statement-II is correct
Description : Assertion: The O - O bond lengths in ozone molecule are intermediate between single and double bonds. Reason: `O_(3)` molecule is a resonance hybrid.
Last Answer : Assertion: The O - O bond lengths in ozone molecule are intermediate between single and double bonds. ... I is not correct and Statement-II is correct
Description : Assertion:- `SF_(6)` cannot be hydrolysed but `SF_(4)` can be. Reason:- Six F atoms in `SF_(6)` prevent the attack of `H_(2)O` on sulphur atom of `SF_
Last Answer : Assertion:- `SF_(6)` cannot be hydrolysed but `SF_(4)` can be. Reason:- Six F atoms in ` ... D. Statement-I is not correct and Statement-II is correct
Description : Assertion :- According to Lamarck, evolution of life forms had occured but driven by use and disuse of organs. Use and disuse of organ leads to change
Last Answer : Assertion :- According to Lamarck, evolution of life forms had occured but driven by use and disuse of ... . D. If both Assertion & Reason are false.
Description : The concept of chemical evolution is based on :
Last Answer : The concept of chemical evolution is based on : A. Crystallization of chemicals B ... combination of chemicals under suitable enviromnental coditions