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DSSSB TGT C9plantpermanent — practice questions

Explore 6 free C9plantpermanent questions in DSSSB TGT Biology. Open each question or exercise to read its content, reference answers and available explanation.

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C9plantpermanent questions and exercises with answers

Showing questions 1–6 of 6.

As per your syllabus, the pores on the leaf epidermis that allow GAS EXCHANGE and TRANSPIRATION are called what?Read the answer and worked solution →As per your syllabus, the hair-like projections on root EPIDERMAL CELLS that increase surface area for absorption of water + minerals are called what?Read the answer and worked solution →As per your syllabus, which cells in PHLOEM regulate the loading + unloading of sugars in sieve tubes?Read the answer and worked solution →As per your syllabus, plants are organised into THREE tissue systems. Which is NOT one of them?Read the answer and worked solution →CLASS9 · Biology · Plant or Animal TissueRead the answer and worked solution →Sort: plant tissue or animal tissue?Read the answer and worked solution →

Worked practice questions

As per your syllabus, the pores on the leaf epidermis that allow GAS EXCHANGE and TRANSPIRATION are called what?

  1. Stomata
  2. Xylem vessels
  3. Lenticels
  4. Root hair
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Correct answer: A. Stomata

As per your syllabus, stomata in the leaf epidermis enable gas exchange + transpiration. The other terms describe different structures.

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As per your syllabus, the hair-like projections on root EPIDERMAL CELLS that increase surface area for absorption of water + minerals are called what?

  1. Cuticle hair
  2. Stomata
  3. Root hair
  4. Phloem hair
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Correct answer: C. Root hair

As per your syllabus, root hair on root epidermis maximise absorption surface. The other options misstate.

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As per your syllabus, which cells in PHLOEM regulate the loading + unloading of sugars in sieve tubes?

  1. Tracheids
  2. Companion cells (specialised parenchyma)
  3. Sclerenchyma
  4. Cuticle cells
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Correct answer: B. Companion cells (specialised parenchyma)

As per your syllabus, companion cells regulate sieve tubes. Tracheids are in xylem sclerenchyma is supportive cuticle is the waxy layer.

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