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Answer 1

Answer:

30. Elephant & Giraffe.

31. Oil & Butter.

32. Cotton & Jute.

33. Glass & Water.

35. Salt & Sugar ( are soluble in water)

Difference between Parallel and reticulate venation.

Parallel Venation

• Veins are parallelly arranged with one another and mostly occurs in monocots

• Presence of midveins classifies parallel venation into –

• Pinnate parallel venation/unicostate parallel venation – veins emerge from evident midvein found in the centre of the leaf lamina from the base to the apex where veins develop perpendicular to the midvein towards the margin and are parallel to each other. Example- as seen in banana leaves

• Palmate parallel venation/multicostate parallel venation – several prominent veins, running parallel to each other. It, in turn, can be of two types – convergent parallel venation and divergent parallel venation. Example – Borassus, Grass

Reticulate Venation.

• Veins are arranged in the form of a network and mostly occurs in dicots

• It can be classified into the following two types:

• Pinnate reticulate venation/unicostate reticulate venation – one midvein is present and all other veins form a mesh-like structure

• Example – as seen in Mangifera leaves

• Palmate reticulate venation/multicostate reticulate venation – Midribs are found, others veins form a network. The venation here is of two types – convergent and divergent reticulate venation

Deference between chemical and physical change.

• A chemical change is a permanent change. A Physical change affects only physical properties i.e. shape, size, etc.
• Some examples of physical change are freezing of water, melting of wax, boiling of water, etc. A few examples of chemical change are digestion of food, burning of coal, rusting, etc.

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Answer 2

Answer:

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