CIE Biology Paper-5: Specimen Questions 56 - 58 of 62

Passage

Image shows Dicot leaf (A transverse section through the mid rib region of a typical dorsiventral leaf)

Image shows Dicot leaf

Image shows Dicot leaf

Image shows Dicot leaf A transverse section through the mid rib region of a typical dorsiventral leaf)

Question number: 56 (2 of 2 Based on Passage) Show Passage

Short Answer Question▾

Write in Short

Make a systematic diagram of it.

Explanation

Systematic diagram of dicot leaf

Image shows labelled diagram of Dicot leaf

Image shows labelled diagram of Dicot leaf

Image shows Dicot leaf

Question number: 57

Essay Question▾

Describe in Detail

Stomata are small openings found widely scattered on the epidermis of leaves and young stems. Prepare a temporary mount of a leaf peel to show stomata.

Explanation

For this experiment firstly use a healthy leaf and remove a part of the peel from its lower surface. By using, a dropper put some drops of safranin on watch glass. After three minutes take out the peel and place it on a clean glass slide. Then Put a drop of glycerin over the peel and place a clean coverslip gently over it with the help of a needle. Observe the slide under microscope.

Figure shows temporary mount of a leaf peel to show stomata.

Figure shows temporary mount of a leaf peel to show stomata.

Figure shows temporary mount of a leaf peel to show stomata. (a) Mounting of leaf peel (b) Epidermal layer in the peel taken from a dicot leaf showing open stomata (c) High power magnification of stomata

Question number: 58

Short Answer Question▾

Write in Short

Figure shows a pepper. What is the symptom seen here on such fruit

Figure shows a pepper

Figure shows a pepper

Figure shows a fruit identify symptoms shown on it

Explanation

The symptom here is fruit spot. The lesions are known as “scabby”; or a common name is bacterial scab. The disease is actually bacterial spot of pepper.

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