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ABO blood group has:
In Mendel's experiments with garden peas, round seed shape (RR) was dominant over wrinkled seeds (rr), and yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F2 generation of the cross RRYY x rryy?
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In honey bee population, sons do not have fathers but have grandfathers. Reason (R): Haploidy in drones of honey bee is due to parthenogenesis while fertilisation results into female bees. In the light of the above statements, choose the correct answer from the options given below:
In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F1 generation, pink flowers were obtained. When pink flowers were selfed, the F2 generation showed white, red, and pink flowers. Choose the incorrect statement from the following:
Which one of the following is the correct match of the events occurring during the menstrual cycle?
A thin prism of angle $15^{\circ}$ made of glass of refractive index $\mu_1=1.5$ is combined with another prism of glass of refractive index $\mu_2=1.75$. The combination of the prism produces dispersion without deviation. The angle of the second prism should be:
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R): Assertion (A): FSH acts upon ovarian follicles in female and Leydig cells in male. Reason (R): Growing ovarian follicles secrete estrogen in female while interstitial cells secrete androgen in male human being. In the light of the above statements, choose the correct answer from the options given below:
The voltage gain of an amplifier with $9\%$ negative feedback is $10$. The voltage gain without feedback will be:
Read the following statements on plant growth and development. Which of the following is incorrect?
Which stage of meiosis can last for months or years in the oocytes of some vertebrates?
4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is
Given below are two statements: Assertion (A): Osteoporosis is characterised by decreased bone mass and increased chances of fractures. Reason (R): Common cause of osteoporosis is increased levels of estrogen. In the light of the above statements, choose the most appropriate answer from the options given below:
The signals for parturition originate from:
A block of mass 4 kg is suspended through two light spring balances A and B connected in series. Then A and B will read respectively:
Given below are two statements regarding oogenesis. Statement I: The primary follicles get surrounded by more layers of granulosa cells, a theca and shows fluid filled cavity antrum. Now it is called secondary follicle. Statement II: Graafian follicle ruptures to release the secondary oocyte from the ovary by the process called ovulation. In the light of the above statements, choose the correct answer from the options given below:
When two displacements represented by $y_1 = a \sin(\omega t)$ and $y_2 = b \cos(\omega t)$ are superimposed, the motion is:
Curie is a unit of:
Match List-I with List-II: List-I (A) Auxin (B) Gibberellin (C) Cytokinin (D) Ethylene List-II (I) Promotes female flower formation in cucumber (II) Overcoming apical dominance (III) Increase in the length of grape stalks (IV) Promotes flowering in pineapple
Which one of the following pairs of chemical substances is correctly categorised?
Which one of the following is wrong for fungi?