In which one of the following, both autogamy and geitonogamy are prevented?
- AWheat
- ✓Papaya
- CMaize
- DCastor
Answer: B.
View full solution →Question types
STD 12 - 1. sexual reproduction in flowering plants question types
586 questions across 1 question group — pick any mix to generate a BIOLOGY paper with step-by-step answer keys.
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Sample Questions
STD 12 - 1. sexual reproduction in flowering plants questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
A dioecious flowering plant prevents both
- ✓autogamy and geitonogamy
- Bgeitonogamy and xenogamy
- Ccleistogamy and xenogamy
- Dautogamy and xenogamy.
Answer: A.
View full solution →Flowers are unisexual in
- AChina rose
- Bonion
- Cpea
- ✓cucumber.
Answer: D.
View full solution →Identify the correct description about the given figure:
- AWater pollinated flowers showing stamens with mucilaginous covering.
- BCleistogamous flowers showing autogamy.
- CCompact inflorescence showing complete autogamy
- ✓Wind pollinated plant inflorescence showing flowers with well exposed stamens.
Answer: D.
View full solution →Identify the set of correct statements:
$A$. The flowers of Vallisneria are colourful and produce nectar.
$B$. The flowers of water lily are not pollinated by water.
$C$. In most of water-pollinated species, the pollen grains are protected from wetting.
$D$. Pollen grains of some hydrophytes are long and ribbon like.
$E$. In some hydrophytes, the pollen grains are carried passively inside water.
Choose the correct answer from the options given below.
- A$A, B, C$ and $D$ only
- B$A, C, D$ and $E$ only
- ✓$B, C, D$ and $E$ only
- D$C, D$ and $E$ only
Answer: C.
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