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AP Intermediate 2nd Year Sexual Reproduction in Flowering Plants — practice questions

Explore 13 free Sexual Reproduction in Flowering Plants questions in AP Intermediate 2nd Year Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Sexual Reproduction in Flowering Plants questions and exercises with answers

Showing questions 1–13 of 13.

A typical angiosperm anther is:Read the answer and worked solution →The hard outer wall of a pollen grain is made up of:Read the answer and worked solution →The inner wall of a pollen grain, the *intine*, is composed of:Read the answer and worked solution →The three parts of a typical pistil are:Read the answer and worked solution →The three cells at the chalazal end of an embryo sac are called:Read the answer and worked solution →The large central cell of the embryo sac contains how many polar nuclei?Read the answer and worked solution →Bagging in plant breeding is done to:Read the answer and worked solution →The protective sheath that encloses the plumule in a grass embryo is the:Read the answer and worked solution →In some seeds (e.g., black pepper, beet), a persistent remnant of the nucellus is retained. This residual tissue is called the:Read the answer and worked solution →As the ovary develops into a fruit, the ovary wall becomes the:Read the answer and worked solution →Parthenocarpic fruits develop:Read the answer and worked solution →Polyembryony refers to:Read the answer and worked solution →Pollen grains can be stored for years in:Read the answer and worked solution →

Worked practice questions

A typical angiosperm anther is:

  1. Dithecous and bilobed
  2. Unilobed and asporangiate
  3. Monothecous and bilobed
  4. Trithecous and trilobed
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Correct answer: A. Dithecous and bilobed

A typical angiosperm anther is **bilobed and dithecous** (each lobe has two theca). The anther is tetragonal with four microsporangia (two per lobe).

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The hard outer wall of a pollen grain is made up of:

  1. Pectin
  2. Cellulose
  3. Sporopollenin
  4. Lignin
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Correct answer: C. Sporopollenin

The pollen **exine** is made of **sporopollenin** — one of the most resistant organic materials known, withstanding high temperatures, strong acids/alkalis, and no enzyme degrades it.

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The inner wall of a pollen grain, the *intine*, is composed of:

  1. Cellulose and pectin
  2. Sporopollenin
  3. Lignin
  4. Suberin
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Correct answer: A. Cellulose and pectin

The **intine** (inner wall) is a thin, continuous layer of **cellulose and pectin**. The exine (outer) is sporopollenin with germ pores.

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More Biology topics

Genetics and EvolutionReproduction in Organisms & PlantsBiotechnology and ApplicationsBiology in Human Welfare & HealthEcology and EnvironmentReproductive HealthOrganisms and PopulationsBiodiversity and Conservation