Browse and search thousands of solved questions for your preparation.
Free questions with full explanations — locked behind signup to protect quality.
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:
Tubectomy is a method of sterilisation in which:
Which of the following is/are correct?
Match List-I with List-II: List-I A. Rose B. Pea C. Cotton D. Mango List-II I. Twisted aestivation II. Perigynous flower III. Drupe IV. Marginal placentation
Pentamerous, actinomorphic flowers, bicarpillary ovary with oblique septa, and fruit a capsule or berry, are characteristic features of:
A certain plant homozygous for yellow seeds and red flowers was crossed with a plant homozygous for green seeds and white flowers. The F1 plants had yellow seeds and pink flowers. The F1 plants were selfed to get F2 progeny. Assuming independent assortment of the two characters, how many phenotypic categories are expected for these characters in the F2 generation?
Select the correct statement:
Statutory ban on amniocentesis in India was necessary because:
Match List-I with List-II: List-I (A) Vexillary aestivation (B) Epipetalous stamens (C) Epiphyllous stamens (D) Perigynous flower List-II (I) Brinjal (II) Peach (III) Pea (IV) Lily
Coconut milk factor is:
Diaphragms, cervical caps and vaults are:
Birth control pills contain synthetic estrogen and progesterone. How might these hormones prevent pregnancy?
What does RCH stand for?
Thalassemia and sickle cell anaemia are caused due to a problem in globin molecule synthesis. Select the correct statement:
What is the figure given below showing in particular?
Which of the following plants possesses the placentation of ovules borne on central axis with no septa?
Identify the wrong statement with reference to the gene 'I' that controls ABO blood groups.
The recombination frequency between the genes a & c is 5%, b & c is 15%, b & d is 9%, a & b is 20%, c & d is 24% and a & d is 29%. What will be the sequence of these genes on a linear chromosome?
One of the major compounds of the cell wall of most fungi is?