Which among the following has specialised tissue for conduction of water?
(i) Thallophyta
(ii) Bryophyta
(iii) Pteridophyta
(iv) Gymnosperms
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (i) and (iv
Find out incorrect sentence
(a) Protista includes unicellular eukaryotic organisms
(b) Whittaker considered cell structure, mode and source of nutrition for
classifying the organisms in five kingdoms
(c) Both Monera and Protista may be autotrophic and heterotrophic
(d) Monerans have well defined nucleus
Paheli had heard that rainwater is as good as distilled water. So she
collected some rainwater in a clean glass tumbler and tested it using a
tester. To her surprise she found that the compass needle showed
deflection. What could be the reasons?
(a) Differentiate between meristematic and permanent tissues in plants
(b) Define the process of differentiation
(c) Name any two simple and two complex permanent tissues in plants.
Is it safe for the electrician to carry out electrical repairs outdoors during
heavy downpour? Explain.
A child staying in a coastal region tests the drinking water and also the
seawater with his tester. He finds that the compass needle deflects more
in the case of seawater. Can you explain the reason?
In case of a fire, before the firemen use the water hoses, they shut off the
main electrical supply for the area. Explain why they do this.
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