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Match List-I with List-II: List-I A. Pteridophyte B. Bryophyte C. Angiosperm D. Gymnosperm List-II I. Salvia II. Ginkgo III. Polystrichum (Polytrichum) IV. Salvinia
The production of gametes by the parents, formation of zygotes, the $F_1$ and $F_2$ plants, can be understood from a diagram called :
Match the following concerning the activity/function and the phytohormone involved: Column-I (Activity/Function) Column-II (Phytohormone) (a) Fruit ripening (i) Abscisic acid (b) Herbicide (ii) Ethylene (c) Bolting (iii) Auxin (d) Stress hormone (iv) Gibberellic acid
Which one of the following is the characteristic feature of gymnosperms?
A prokaryotic autotrophic nitrogen-fixing symbiont is found in:
A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the F1 plants were selfed, the resulting genotypes were in the ratio of:
Select the correct statements regarding cell division stages.
Which of the following is incorrectly matched?
Examine the figure given below and select the right option giving all the four parts (A, B, C and D) correctly identified:
Artificial insemination means:
Match List-I with List-II regarding the stages of the Cell Cycle: List-I A. G1 phase B. S phase C. G2 phase D. G0 phase List-II I. Quiescent stage II. Replication of DNA III. Interval between mitosis and initiation of DNA replication IV. Proteins are synthesised in preparation for mitosis
Oxygen is not produced during photosynthesis by:
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R): Assertion (A): In gymnosperms, the pollen grains are released from the microsporangium and carried by air currents. Reason (R): Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed. In the light of the above statements, choose the correct answer from the options given below:
Roots play an insignificant role in the absorption of water in:
Read the following statements and choose the set of correct statements regarding the members of Phaeophyceae (Brown Algae): A. Asexual reproduction occurs usually by biflagellate zoospores. B. Sexual reproduction is by oogamous method only. C. Stored food is in the form of carbohydrates which is either mannitol or laminarin. D. The major pigments found are chlorophyll a, c and carotenoids and xanthophyll. E. Vegetative cells have a cellulosic wall, usually covered on the outside by gelatinous coating of algin.
During non-cyclic photophosphorylation, when electrons are lost from the reaction center at PS II, what is the source which replaces these electrons?
Which of the following hormone levels will cause release of ovum (ovulation) from the Graafian follicle?
If two persons with 'AB' blood group marry and have the sufficiently large number of children, these children could be classified as 'A' blood group: 'AB' blood group: 'B' blood group in 1: 2: 1 ratio. The modern technique of protein electrophoresis reveals the presence of both 'A' and 'B' type proteins in 'AB' blood group individuals. This is an example of:
In case of a couple, where the male is having a very low sperm count, which technique will be suitable for fertilisation?
Mongolian idiocy (an obsolete term) is due to trisomy in the 21st chromosome. This condition is called: