Seeds of Phoenix dactylifera were found at:
[Sexual-Reproduction-in-Flowering-Plants] [class-xii]
Correct Option: B
Answer: King Herod's palace
Explanation: Phoenix dactylifera discovered during the archeological excavation at King Herod's palace near the Dead Sea.
Large trees like Ficus develop from:
[Sexual-Reproduction-in-Flowering-Plants] [class-xii]
Correct Option: B
Answer: Tiny seeds
Explanation: Have you seen a tiny seed of Ficus? How large is the tree of Ficus developed from that tiny seed.
Apomixis produces seeds that are:
[Sexual-Reproduction-in-Flowering-Plants] [class-xii]
Correct Option: B
Answer: Clones
Explanation: Apomixis is a form of asexual reproduction... there is no segregation of characters... (Implies cloning).
The filiform apparatus is present at the:
[Sexual-Reproduction-in-Flowering-Plants] [class-xii]
Correct Option: B
Answer: Micropylar tip of synergids
Explanation: The synergids have special cellular thickenings at the micropylar tip called filiform apparatus.
The body of the ovule fuses with the funicle at:
[Sexual-Reproduction-in-Flowering-Plants] [class-xii]
Correct Option: C
Answer: Hilum
Explanation: The body of the ovule fuses with funicle in the region called hilum.
In which type of pollination do pollen grains come from the same flower?
[Sexual-Reproduction-in-Flowering-Plants] [class-xii]
Correct Option: C
Answer: Autogamy
Explanation: Transfer of pollen grains from the anther to the stigma of the same flower... (Autogamy).
Cleistogamous flowers are:
[Sexual-Reproduction-in-Flowering-Plants] [class-xii]
Correct Option: B
Answer: Invariably autogamous
Explanation: Cleistogamous flowers are invariably autogamous as there is no chance of cross-pollen landing on the stigma.
Wind pollination requires pollen to be:
[Sexual-Reproduction-in-Flowering-Plants] [class-xii]
Correct Option: B
Answer: Light and non-sticky
Explanation: Wind pollination also requires that the pollen grains are light and non-sticky.
The tassels of a corn cob are:
[Sexual-Reproduction-in-Flowering-Plants] [class-xii]
Correct Option: B
Answer: Stigma and style
Explanation: The ears you see are nothing but the stigma and style which wave in the wind to trap pollen grains.
Which of the following is a marine seagrass?
[Sexual-Reproduction-in-Flowering-Plants] [class-xii]
Correct Option: C
Answer: Zostera
Explanation: Several marine sea-grasses such as Zostera.