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State the connecting links between Peripatus with Annelida and Arthopoda.
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What are vestigial organs?
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Give two examples of vestigial organs in human beings and plants.
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…………. is not essential for photosynthesis.
(a) Oxygen
(b) Carbon dioxide
(c) Light
(d) Chlorophyll
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In the extraction of aluminium: Name the process of concentration of bauxite.
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Human tailbone is a vestigial organ. Explain.
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Considering the relationship in the first pair, complete the second pair:
Root : Vegetative propagation : : Flower : ____________
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The process of absorption of water into raisins occurs through its membranes. This process is known as ______________.
(a) Absorption
(b) Osmosis
(c) Adsorption
(d) Diffusion
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In the extraction of aluminium Write the cathode reaction in electrolytic reduction of alumina.
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In the extraction of aluminium: Write the function and formula of cryolite in the extraction of aluminium.
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In the extraction of aluminium: Draw the diagram for the extraction of aluminium.
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In the extraction of aluminium: Why is it necessary to replace anodes time to time?
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Which aspects will you check for pre-disaster management in your school?
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What do we call the degenerated or partially developed useless organs in living organisms? Enlist such organs in human body? How the same organs are useful in other animals?
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Read the following statement and justify same in your own words with the help of suitable example.
There is evidences of fatal science among chordates.
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Vestigial organ ______ present in human body is proof of evolution.
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Write short notes based upon the information known to you.
Embryology
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Write short notes based upon the information known to you.
Connecting link
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Write the names of those animals in whom some vestigial organs in human body are functioning.
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Explain with suitable examples importance of anatomical evidence in evolution.
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