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NEET UG Sexual Reproduction in Flowering Plants — practice questions

Explore 80 free Sexual Reproduction in Flowering Plants questions in NEET UG 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 1–30 of 80.

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 →An anther is four-sided with four microsporangia, ___ in each lobe.Read the answer and worked solution →Each microsporangium releases how many pollen grains when the anther splits?Read the answer and worked solution →Pollen grains represent the male:Read the answer and worked solution →Sporopollenin lets pollen exine survive:Read the answer and worked solution →In a mature pollen grain, which cell is bigger with abundant food reserve?Read the answer and worked solution →Carrot grass, Parthenium, came to India as a contaminant with imported:Read the answer and worked solution →Rice and wheat pollen lose viability within about:Read the answer and worked solution →The stalk that attaches an ovule to the placenta is the:Read the answer and worked solution →The basal part of the ovule, opposite the micropyle, is the:Read the answer and worked solution →A wheat ovary has one ovule; a papaya ovary has:Read the answer and worked solution →The egg apparatus consists of one egg cell and two:Read the answer and worked solution →Closed cleistogamous flowers give assured seed set even without:Read the answer and worked solution →Wind-carried pollen must be:Read the answer and worked solution →The tassels on a corn cob that wave in the wind are the:Read the answer and worked solution →Water lily flowers rise above the water and are pollinated by:Read the answer and worked solution →Wind and water pollinated flowers are usually not colourful and do not produce:Read the answer and worked solution →Flowers pollinated by flies and beetles attract them with: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
Show answer and solution

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 ApplicationsBiodiversity and ConservationThe Living World & Biological ClassificationNeural Control and Chemical CoordinationPrinciples of Inheritance and VariationAnimal Kingdom