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CBSE Class 11 (Science) Morphology and Anatomy of Flowering Plants — practice questions — page 3

Explore 195 free Morphology and Anatomy of Flowering Plants questions in CBSE Class 11 (Science) Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Morphology and Anatomy of Flowering Plants questions and exercises with answers

Showing questions 61–90 of 195.

Two small leaf-like structures at the leaf base are called:Read the answer and worked solution →In monocots the leaf base expands into a ___ covering the stem.Read the answer and worked solution →Long flexible petioles let leaf blades flutter in wind, which:Read the answer and worked solution →In a compound leaf, a bud is found in the axil of the:Read the answer and worked solution →Guava bears a pair of leaves at each node, facing each other. Its phyllotaxy is:Read the answer and worked solution →Alstonia has more than two leaves at a node forming a ring. This phyllotaxy is:Read the answer and worked solution →A flower is a modified shoot whose apical meristem becomes a:Read the answer and worked solution →In a cymose inflorescence the main axis:Read the answer and worked solution →Calyx and corolla are called ___ organs of the flower.Read the answer and worked solution →In lily the calyx and corolla look alike and are together called the:Read the answer and worked solution →A canna flower cannot be cut into two similar halves by any plane. It is:Read the answer and worked solution →A flower with a reduced leaf at the base of its pedicel is:Read the answer and worked solution →Sepals are usually green and protect the flower in the:Read the answer and worked solution →In Calotropis the petals just touch at the margins without overlapping. This aestivation is:Read the answer and worked solution →A stamen is made of a filament and an:Read the answer and worked solution →After fertilisation the ovary matures into a fruit and the ovules become:Read the answer and worked solution →In a maize seed the radicle is enclosed in a sheath called the:Read the answer and worked solution →Catch the flower whorlsRead the answer and worked solution →Pop the leaf partsRead the answer and worked solution →Steer into the plant laneRead the answer and worked solution →Slice the flower wordsRead the answer and worked solution →Monocot or dicotRead the answer and worked solution →Which placentationRead the answer and worked solution →One word is wrongRead the answer and worked solution →Morphology bingoRead the answer and worked solution →Which tissue system forms the outermost covering of the plant body?Read the answer and worked solution →What is the waxy layer on the outside of the epidermis called?Read the answer and worked solution →In which plant organ is the cuticle usually absent?Read the answer and worked solution →Each stoma is bordered by two cells that control its opening. What are they called?Read the answer and worked solution →What shape do the guard cells of grasses have?Read the answer and worked solution →

Worked practice questions

Two small leaf-like structures at the leaf base are called:

  1. Bracts
  2. Sepals
  3. Tendrils
  4. Stipules
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Correct answer: D. Stipules

1. They sit laterally at the leaf base. 2. They look like tiny leaves. 3. They are stipules. _Source: syllabus Biology, Chapter 5, Morphology of Flowering Plants._

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In monocots the leaf base expands into a ___ covering the stem.

  1. Sheath
  2. Pulvinus
  3. Petiole
  4. Stipule
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Correct answer: A. Sheath

1. Grass leaves wrap round the stem at their base. 2. That wrapping part is the expanded leaf base. 3. It is called a sheath. _Source: syllabus Biology, Chapter 5, Morphology of Flowering Plants._

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Long flexible petioles let leaf blades flutter in wind, which:

  1. Sheds the leaf
  2. Cools the leaf
  3. Warms the leaf
  4. Stops photosynthesis
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Correct answer: B. Cools the leaf

1. Fluttering brings fresh air to the leaf surface. 2. Moving air carries heat away. 3. So the leaf is cooled. _Source: syllabus Biology, Chapter 5, Morphology of Flowering Plants._

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