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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Mendel's law of Independent assortment does not hold good for the genes that are located closely on the same chromosome. Reason (R): Closely located genes assort independently. In the light of the above statements, choose the correct answer from the options given below:
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:
Select the correct matching of a hormone, its source and its function:
Selaginella and Salvinia are considered to represent a significant step towards the evolution of seed habit because:
Pills, implants and IUDs are very effective if taken within __________ of coitus.
Read the following statements and choose the correct statement:
Which stage of meiotic prophase shows terminalisation of chiasmata as its distinctive feature?
Given are the following five statements (I - V) for your consideration: I: In Equisetum, the female gametophyte is retained on the parent sporophyte II: In Ginkgo, the male gametophyte is not independent III: The sporophyte in Marchantia is more developed than that in Polytrichum IV: Sexual reproduction in Volvox is isogamous V: The spores of slime moulds lack cell walls How many of the above statements is/are correct?
Emerson’s enhancement effect and red drop have been instrumental in the discovery of?
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
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:
Match List-I with List-II: List-I A. Cells are metabolically active and proliferate (grow) B. DNA replication takes place C. Proteins are synthesised in preparation for mitosis D. Quiescent stage with metabolically active cells List-II I. G2 phase II. G1 phase III. G0 phase IV. S phase
Identify the correct statements regarding chemiosmotic hypothesis:
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
A stage in cell division is shown in the figure. Select the answer which gives the correct identification of the stage with its characteristics:
Which, among the following, are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?
Which one single organism or the pair of organisms is correctly assigned to its or their named taxonomic group?
Regarding Meiosis, which of the statement is incorrect?
Crossing over takes place between which chromatids and in which stage of the cell cycle?
Select the correct sequence of organs in the alimentary canal of cockroach starting from mouth (1) Pharynx -> Oesophagus -> Crop -> Gizzard -> Ileum -> Colon -> Rectum (2) Pharynx -> Oesophagus -> Gizzard -> Crop -> Ileum -> Colon -> Rectum (3) Pharynx -> Oesophagus -> Gizzard -> Ileum -> Crop -> Colon -> Rectum (4) Pharynx -> Oesophagus -> Ileum -> Crop -> Gizzard -> Colon -> Rectum