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The genotypes of a husband and wife are IAIB and IAi respectively. Among the blood types of their children, how many different genotypes and phenotypes are possible?
Family Fabaceae differs from Solanaceae and Liliaceae. With respect to the stamens, pick out the characteristics specific to family Fabaceae but not found in Solanaceae or Liliaceae.
Identify the part of the seed from the given figure which is destined to form root when the seed germinates:
Match List-I with List-II List-I A. Choanocytes B. Scales C. Comb plates D. Radula List-II (i) Ctenophora (ii) Mollusca (iii) Porifera (iv) Reptilia
Which one of the following cell organelles is enclosed by a single membrane?
Given below are two statements: Statement I: Mitochondria and chloroplasts are both double membrane bound organelles. Statement II: Inner membrane of mitochondria is relatively less permeable, as compared to chloroplast. In the light of the above statements, choose the most appropriate answer from the options given below:
Which of the following statements are correct with respect to the hormone and its function? A: Thyrocalcitonin (TCT) regulates the blood calcium level B: In males, FSH and androgens regulate spermatogenesis C: Hyperthyroidism can lead to goitre D: Glucocorticoids are secreted in Adrenal Medulla E: Parathyroid hormone is regulated by circulated levels of sodium ions
Which of the following is the correct floral formula of Liliaceae?
Match List I with List II: List I (Types of stamens) A. Monoadelphous B. Diadelphous C. Polyadelphous D. Epiphyllous List II (Example) I. Citrus II. Pea III. Lily IV. China-rose
Match List-I with List-II: List-I (a) Smooth muscle (b) Tropomyosin (c) Skull (d) Red muscle List-II (i) Myoglobin (ii) Thin filament (iii) Sutures (iv) Involuntary
Match List I with List II regarding placentation types: List I (Plant) (A) China rose (B) Mustard (C) Primrose (D) Marigold List II (Placentation) (I) Free central (II) Basal (III) Axile (IV) Parietal
Match List-I with List-II: List-I A. Metacentric chromosome B. Sub-metacentric chromosome C. Acrocentric chromosome D. Telocentric chromosome List-II I. Chromosome has a terminal centromere II. Middle centromere forming two equal arms of chromosome III. Centromere is slightly away from the middle chromosome resulting into two unequal arms IV. Centromere is situated close to its end forming one extremely short and one very long arm
Which stage of meiotic prophase shows terminalisation of chiasmata as its distinctive feature?
If you are provided with the root tips of onion in your class and are asked to count the chromosomes, which of the following stages can you most conveniently look into?
Regarding Meiosis, which of the statement is incorrect?
Osteoporosis, an age-related disease of skeletal system, may occur due to:
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): FSH which interacts with membrane bound receptors does not enter the target cell. Reason (R): Binding of FSH to its receptors generates second messenger (cyclic AMP) for its biochemical and physiological responses. In the light of the above statements, choose the most appropriate answer from the options given below:
Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R) Assertion (A): The growth of the multicellular organism is due to mitosis Reason (R): Mitosis is also called as equational division and it offers genetic stability
The stage during which separation of the paired homologous chromosomes begins is:
The time period of a geostationary satellite is $24 \text{ hr}$ at a height $6R_E$ ($R_E$ is the radius of the Earth) from the surface of the earth. The time period of another satellite whose height is $2.5R_E$ from the surface will be: