Biology Today - May 2018
ANGIOSPERMS Angiosperms are seed plants in which seeds are formed inside fruits and the sporophylls are organised into flowers. ...
Table: Comparison between dicots and monocots Features Dicots Monocots Cotyledons Usually two One cotyledon Flowers Penta or tet ...
CHAPTER-1 : THE LIVING WORLD Multiple Choice Questions Select the option which correctly fills the given blanks. I. __ contains ...
IV. First botanical garden was established by Hippocrates. I II III IV (a) T T F T (b) T F F T (c) T T F F (d) F T T T Which of ...
(B) Read the given passage and correct the errors, wherever present. Herbarium is a place where fresh plant specimens, mounted o ...
Strain 1 Strain 2 Step (i) Step (vi) Step (ii) Step (iii) Step (iv) Mitotic crossing over Fig.: Pontecorvo’s idea of parasexual ...
CHAPTER-2 : BIOLOGICAL CLASSIFICATION Multiple Choice Questions How is a capsule advantageous to a bacterium? (a) It protects t ...
(c) Viruses cannot be grown in culture medium. (d) Prions possess only nucleoid and no protein. Select the mismatched pair. (a) ...
Figure Based Questions Refer the given figure and answer the following questions. (a) The given life cycles, (A and B) are fou ...
Identify A, B, C and D in the given figure of a moss. (a) A-Apophysis, B-Capsule, C-Sporophyte,D-Gameto- phyte (b) A-Capsule, ...
Passage Based Questions 18.(A) Complete the given passage with appropriate words or phrases. Red algae are marine except a few f ...
Which one of the following phyla is correctly matched with its two general characteristics? (a) Echinodermata – pentamerous rad ...
Match The Columns Match Column I with Column II. Column I Column II A. Choanocytes (i) Platyhelminthes B. Cnidoblasts (ii) Cten ...
Refer the given figure and answer the following questions. (a) Identify the generic names of organisms A, B and C. (b) What is ...
Life cycle with zygotic meiosis Life cycle with gametic meiosis (i) Zygote is the only diploid structure in the life cycle. All ...
them. Fertilisation is internal external and they are mostly viviparous oviparous. (a) 20. (c) 21. (c) 22. (d) 23. (c) (c) 25. ...
The process of development of new organisms through the formation and fusion of gametes is called sexual reproduction. In angio ...
Microsporogenesis The process of formation of pollen grains through meiosis in pollen mother cells is termed as microsporogenes ...
Structure of Ovule A typical angiosperm ovule is a small structure attached to the placenta by means of stalk called funicle. T ...
Agents of Pollination Xenogamy or cross pollination is performed with the help of an external agency which may be abiotic (wind ...
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