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Science Do as instructed[4M]

Plants: Structure and Function · Maharashtra Board STD 7 (MSBSHSE - Semi English Medium). 5 questions.

Questions

Do as instructed[4M]

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5 questions · self-marked practice — reveal the answer and mark yourself.

Question 14 Marks
What are the similarities and differences between.
Coconut tree and Jowar stalk plant
Answer
Differences:
Coconut treeJowar stalk plant
i. It is tall and has a thick stemi. It is small and has a thin stem.
ii. It has strong root system.ii. It has weak root system.
iii. Each and every part of tree is useful.iii. Only seeds are useful.
Similarities:
  1. Both are from same kingdom plantae.
  2. Both are autotrophic.
  3. Both are monocotyledonous plants.
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Question 24 Marks
What are the similarities and differences between.
Leaves of banana and Leaves of mango
Answer
Leaves of bananaLeaves of mango
i. It has parallel venation.i. It has reticulate venation.
ii. It is very large in size.ii. It is small in size.
iii. It is a monocotyledonous plant.iii. It is a dicotyledonous plant.
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Question 34 Marks
What are the similarities and differences between.
Onion and Coriander
Answer
Differences:
OnionCoriander
i. It is a biennial plant.i. It is an annual plant.
ii. It has monocoty­ledonous seed.ii. It has dicotyledonous seeds.
iii. It has fibrous root.iii. It has tap root but later on changes to fibrous root system.
Similarities:
  1. Both are used in cooking.
  2. Both are edible.
  3. Both belongs to kingdom plantae.
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Question 44 Marks
What are the similarities and differences between.
Jowar and Moong
Answer
Differences:

JowarMoong
i. It has fibrous root.i. It has tap root.
ii. It is a monocotyledonous seed.ii. It is a dicotyledonous seed.
iii. It is a rabi crop.iii. It is a kharif crop

Similarities:
Jowar and Moong both are angiosperms.

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Question 54 Marks
Certain properties are mentioned below. Find a leaf corresponding to each property and describe those plants.
leaves with smooth surface, leaves with rough surface, fleshy leaf, spines on leaf.
Answer
  1. Leaves with smooth surface: e.g. Banana leaf. It is large in size. It is closely rolled up one over the other. Together they look like a trunk but they form only an apparent trunk. It has parallel venation.
  2. Leaves with rough surface: e.g. Hibiscus leaf. It has reticulate venation. Leaf margin is toothed.
  3. Fleshy leaf: e.g. Jade plant, water hyacinth. It has fleshy, glossy and smooth leaves. They are coloured jade green and having a slightly red tinge towards the edge of leaves when exposed to higher level of light.
  4. Spines on leaf: e.g. Opuntia, Ci/cas, kevda. Opuntia is a desert plant. Leaf is thick, fleshy and having spines on it.
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