Biology miscellaneous
- Where does the cabbage store food ?
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Cabbages have no need to store food as they are seasonal plants and die after about 4 to 6 months. They do however produce food in the leaves of the plants and would utilize short-term storage (in the leaves) for simple metabolic processes.
Correct Option: A
Cabbages have no need to store food as they are seasonal plants and die after about 4 to 6 months. They do however produce food in the leaves of the plants and would utilize short-term storage (in the leaves) for simple metabolic processes.
- Deficiency of iron causes :
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Goitre: swelling of the neck or larynx resulting from enlargement of the thyroid gland due to iodine deficiency; Polio: an acute, viral, infectious disease spread from person to person, primarily via the fecal-oral route; Rickets: defective mineralization of bones due to deficiency or impaired metabolism of vitamin D; Scurvy: a disease resulting from a deficiency of vitamin C. Iron deficiency leads to anemia.
Correct Option: E
Goitre: swelling of the neck or larynx resulting from enlargement of the thyroid gland due to iodine deficiency; Polio: an acute, viral, infectious disease spread from person to person, primarily via the fecal-oral route; Rickets: defective mineralization of bones due to deficiency or impaired metabolism of vitamin D; Scurvy: a disease resulting from a deficiency of vitamin C. Iron deficiency leads to anemia.
- Stamens are fused with each other by their anthers and also with the petals in :
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The loose union of structure of the same whorl is called cohesion, but the intimate histological union is called connation. When anthers are fused with each other, the condition is described as syngenesious e.g., Compositae, Lobeliaceae. This fusion is called cohesion. When there is fusion of stamens with petals, they are described as epipetalous e.g., Gamopetale.
Correct Option: C
The loose union of structure of the same whorl is called cohesion, but the intimate histological union is called connation. When anthers are fused with each other, the condition is described as syngenesious e.g., Compositae, Lobeliaceae. This fusion is called cohesion. When there is fusion of stamens with petals, they are described as epipetalous e.g., Gamopetale.
- Coupling and repulsion are the two states of :
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Genetic linkage is the tendency of genes that are located proximal to each other on a chromosome to be inherited together during meiosis. The figure below depicts the gamete composition for linked genes from coupling and repulsion crosses:
Correct Option: A
Genetic linkage is the tendency of genes that are located proximal to each other on a chromosome to be inherited together during meiosis. The figure below depicts the gamete composition for linked genes from coupling and repulsion crosses:
- The plants, which grow under water stress conditions of deserts are :
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The term xerophyte refers to a plant species that has evolved over time to adapt to dry regions like deserts. Xerophytes have adapted to be able to keep extremely large amounts of water for a long period of time. Without this capability, the plant would die, as the desert region itself does not provide enough water to sustain life.
Correct Option: B
The term xerophyte refers to a plant species that has evolved over time to adapt to dry regions like deserts. Xerophytes have adapted to be able to keep extremely large amounts of water for a long period of time. Without this capability, the plant would die, as the desert region itself does not provide enough water to sustain life.