15 Questions
What is one of the merits of hydrophytes for adaptation?
They fix sunlight and ensure the survival of an aquatic ecosystem
Why are the leaves of hydrophytes thin and flat with large air spaces inside?
To provide buoyancy
What makes the cells of endosperm in angiospermic ovule more efficient in supplying food materials to the developing embryo?
They are triploid due to double fertilization
Why is the process of fertilization in a flowering plant referred to as double fertilization?
Because two male gametes are involved
What makes hydrophytes adapted to survive in excess water in their surroundings?
They have only small roots and can extract nutrients from the surrounding water
Explain the adaptation of hydrophytes to survive in excess water in their surroundings.
Hydrophytes are adapted to survive in excess water by having thin, flat leaves with large air spaces inside for buoyancy, and requiring only small roots as they can extract nutrients from the surrounding water through their tissues.
What is the significance of endosperm in angiospermic ovule?
The endosperm in angiospermic ovule is considered more efficient in supplying food materials to the developing embryo because its cells are triploid due to double fertilization.
Why is the process of fertilization in a flowering plant referred to as double fertilization?
The process of fertilization in a flowering plant is referred to as double fertilization because two male gametes from the pollen tube fertilize both the egg cell and the polar nuclei in the embryo sac.
What are some merits of hydrophytes for the survival of an aquatic ecosystem?
Hydrophytes fix sunlight and ensure the survival of an aquatic ecosystem by providing habitat and food for aquatic organisms, and by contributing to oxygenation of the water through photosynthesis.
How do hydrophytes adapt to their aquatic environment?
Hydrophytes adapt to their aquatic environment by having specialized tissues for extracting nutrients from the surrounding water, and by developing buoyant leaves with large air spaces to stay afloat.
Why do hydrophytes have thin, flat leaves with large air spaces inside?
To give them buoyancy and adapt to their aquatic environment.
How do hydrophytes adapt to survive in excess water in their surroundings?
By having small roots and extracting nutrients from the surrounding water through their tissues.
What is the significance of endosperm in angiospermic ovule?
The cells of endosperm are triploid due to double fertilization, making them more efficient in supplying food materials to the developing embryo.
Why is the process of fertilization in a flowering plant referred to as double fertilization?
Because two male gametes from the pollen tube are involved in the process.
What is one of the merits of hydrophytes for the survival of an aquatic ecosystem?
They fix sunlight and ensure the survival of the aquatic ecosystem.
Test your knowledge on reproduction in organisms with this quiz. Questions cover topics such as parthenogenesis and asexual reproduction.
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