FBISE Class 9th (SSC-l)
Explore subjects and practice MCQs
3
Chapters
1,610
Total MCQs
FBISE Class 9th (SSC-l)
Answer: Oxygen is released as a by-product of photosynthesis.
Answer: All living plant cells respire continuously to release energy.
Answer: Phloem translocates organic food from the leaves to other parts of the plant.
Answer: Sucrose is the main form in which sugar is transported in the phloem of most plants.
1405
Answer: Xylem conducts water and minerals in only one direction, upward from the roots.
Answer: In the early morning, transpiration is low and root pressure is high, so guttation occurs.
Answer: Transpiration is greatly reduced at night but does not stop completely.
Answer: Oxygen is given out as a by-product of photosynthesis.
Answer: Nitrogen is mobile, so it moves to young parts, and the older leaves show deficiency symptoms first.
Answer: High humidity with high root pressure and low transpiration forces water out through the hydathodes.
Answer: Reproduction is the biological process by which organisms produce offspring of their own kind, ensuring the continuity of species.
1412
Answer: Grafting joins an upper stem piece (scion) to a rooted part (rootstock) so they grow together as one plant.
Answer: When pollen travels between flowers of different plants of the same species, the process is called cross-pollination.
Answer: Asexual reproduction involves a single parent and does not require the fusion of gametes.
Answer: Grafting combines the strong roots of one plant (stock) with the desirable stem or fruit of another (scion).
Answer: Asexual reproduction produces offspring that are genetically identical clones of the single parent.
Answer: Vegetative propagation uses vegetative parts such as stems, roots and leaves, but not pollen grains, which are reproductive parts.
Answer: Parthenocarpy is the development of a fruit without fertilization, as seen in bananas and seedless grapes.
Answer: The potato tuber is a swollen underground stem that bears buds (eyes) which grow into new plants.
Answer: Bryophyllum bears buds along the margins of its leaves, and each bud can develop into a new plant.