Among the following organisms can we see asexual reproduction . Write about the method of asexual reproduction in any of the two organisms.
(a) Paramoecium (b) Yeast (c) Spirogyra (d) Amoeba (e) Planaria

Name the types of asexual reproduction in the following organisms: (a) Paramoecium (b) Yeast

Which of the following statements, support the view that elaborate sexual reproductive process appeared much later in the organic evolution. (I) Lower groups of organisms have simpler body design (II) Asexual reproduction is common is lower groups (III) Asexual reproduction is common in higher groups of organisms. (IV) The high incidence of sexual reproduction in angiosperms and vertebrates Choose the correct answer from the options given below

Write any two ores with formulae of the following metals: (a) Aluminium (b) Zinc (c) Iron (d) copper

Among the following asexual reproductive organs are (A) Zoospores (B) Gemmules in Sponge (C ) Bulbil of Agave (D ) Rhizome of ginger (E ) Offset of water hyacinth (F ) Leaf buds of Bryophyllum

Write any two methods of preparation of ethylene . How does it reacts with following ? (a) Cold , dil.alk. KMnO_(4) (b) Br_(2)// C Cl_(4)

Think about the following changes and decide whether they are physical or chemical changes. Write the type of change and reasons for that in the table.(a) Twinkling of stars (b) Cooking of vegetables (c) Cutting of fruits (d) Rusting of iron(e) Combustion of magnesium ribbon (f) Burning of candle