What is aestivation and its type?
What is aestivation and its type?
Aestivation or estivation is the positional arrangement of the parts of a flower within a flower bud before it has opened. Aestivation is also sometimes referred to as praefoliation or prefoliation, but these terms may also mean vernation: the arrangement of leaves within a vegetative bud.
What are the different type of aestivation?
They are as follows:
- Valvate aestivation: Sepals or petals in a whorl just touch one another.
- Twisted aestivation: One margin of the appendage overlaps the margin of the next appendage.
- Imbricate aestivation: Margins of sepals or petals overlap one another but not in any particular direction.
- Vexillary aestivation:
What is called aestivation?
Aestivation (Latin: aestas (summer); also spelled estivation in American English) is a state of animal dormancy, similar to hibernation, although taking place in the summer rather than the winter. It takes place during times of heat and dryness, the hot dry season, which are often the summer months.
What is aestivation explain with diagram?
Aestivation or estivation is the positional organisation of the sections of the flower inside the bud of the flower before it is opened. That is also the manner in which sepals or petals are arranged in a flower bud with respect to the other members of the same whorl.
What is aestivation and its types Class 11?
Which animal does aestivation?
Animals who estivate include the fat-tailed lemur (the first mammal discovered who estivates); many reptiles and amphibians, including the North American desert tortoise, the spotted turtle, the California tiger salamader, and the water-holding frog; certain air-breathing land snails; and some insects, including bees.
What is the difference between Gamosepalous and Polysepalous?
Gamosepalous refers to a flower that possesses a calyx, consisting of fused sepals. Polysepalous refers to a flower that possesses a calyx, consisting of separate sepals.
How are the different types of aestivation different?
Explain different types of aestivation. Aestivation is the mode of arrangement of sepals or petals in a floral bud with respect to the other members of the same whorl. There are four main types of aestivation.
What does the term aestivation mean in biology?
Aestivation is generally defined as a type of dormancy, which is a survival strategy used to sustain lack of food and other extreme conditions ( Pinder et al., 1992; Abe, 1995; Storey, 2002 ). Animals that aestivate become inactive and stop feeding in response to warm temperatures.
Which is the best description of valvate aestivation?
1. Valvate aestivation: Sepals or petals in a whorl just touch one another. They do not overlap one another. It is observed in Calotropis. 2. Twisted aestivation: One margin of the appendage overlaps the margin of the next appendage. Such type of aestivation is seen in lady’s finger, china rose and cotton.
Which is an example of imbricate aestivation?
Imbricate aestivation: Margins of sepals or petals overlap one another but not in any particular direction. It is seen in Gulmohar and Cassia. 4.
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