CBSE Class 11 Biology VBQs Plant Growth And Development

 Question. Differentiation of shoot is controlled by (a) high gibberellin : cytokinin ratio (b) high auxin : cytokinin ratio (c) high cytokinin : auxin ratio (d) high gibberellin : auxin ratio. Answer : C Question. Which one of the PGRs would you use if you are asked…

CBSE Class 11 Biology VBQs Photosynthesis In Higher Plants

Ques. Ferredoxin is a constituent of (a) PS I (b) PS II (c) Hill reaction (d) P680.  Answer: A Question. During dark reaction the three carbon atoms of 3-PGA are derived from (a) RuBP only (b) CO2 only (c) RuBP + CO2 (d) RuBP + CO2 + PEP. Answer. C Question.…

CBSE Class 11 Biology VBQs Mineral Nutrition

Ques. Match the following concerning essential elements and their functions in plants.   Column-I                    Column-II (A) Iron                 (i)…

CBSE Class 11 Biology VBQs Transport In Plants

Questions : 1. Why during the rainy season the doors and windows are difficult to close and open. Give the phenomenon behind this, give its definition. Ans1. The phenomenon is "Imbibition". In which a special type of diffusion occurs where the water is absorbed by…

CBSE Class 11 Biology VBQs Cell Cycle

Question. The cellular structure which disappear during mitosis is (a) plasma membrane (b) spindle apparatus (c) mitochondria (d) nuclear membrane and nucleolus. Answer : D Question. Select the stage that begins with the simultaneous splitting of centromere of each…

CBSE Class 11 Biology VBQs Biomolecule

Question. One day Suresh was not well. He visited to hospital where doctor checked him and diagnosed the viral fever after blood investigation. He prescribed three antibiotics doses per day after meal and also said to take a B-complex at morning before meal. 1) Name the…

CBSE Class 11 Biology VBQs Cell And Its Structure

Question. The fluid mosaic model explains (a) Only structural aspects of cell membrane (b) Only functional aspects of cell membrane (c) Both structural and functional aspects of cell membrane (d) Only fluidity of membrane Answer. C Question. Cell membrane is …… to ions. (a)…

CBSE Class 11 Biology VBQs Structural Organisation In Animals

Question. Cuboidal epithelium with brush border of microvilli is found in (a) lining of intestine (b) ducts of salivary glands (c) proximal convoluted tubule of nephron (d) Eustachian tube Answer: C Question. Goblet cells of alimentary canal are modified from (a) squamous…

CBSE Class 11 Biology VBQs Morphology Of Flowering Plants

1. Omprakash used to go to vegetable market with his grandfather, a retired biology teacher. Grandfather told Omprakash that chilies, brinjal and tomato belong to the same family of plants and asked him to find out similarity in these plants. Read the above passage…

CBSE Class 11 Biology VBQs Animal Kingdom

Question. Consider following features. (A) Organ system level of organisation (B) Bilateral symmetry (C) True coelomates with segmentation of body Select the correct option of animal groups which possess all the above characteristics. (a) Annelida, Mollusca and Chordata (…

CBSE Class 11 Biology VBQs Plant Kingdom

Question. Male gametophyte with least number of cells present in: (a) Pteris (b) Funaria (c) Lilium (d) Pinus Answer : C Question. Plants commonly called vascular cryptogams are: (a) Bryophytes (b) Pteridophytes (c) Algae (d) Angiosperms Answer : B Question.…

CBSE Class 11 Biology VBQs Biological Classification

Question. Many blue-green algae occur in thermal springs (hot-water springs). The temperature tolerance of these algae have been attributed to their (a) mitochondrial structure (b) importance of homopolar bonds in their proteins (c) cell wall structure (d) modern cell…

CBSE Class 11 Biology VBQs The Living World

Question. Defining property of living organism? a. Reproduction b. Metabolism c. Consciousness d. Cell division Answer. C Question. Which of the following do not reproduces? a. Phytoplankton b. Worker bee c. Queen bee d. Mycoplasma Answer. B Question. …