Which of the following has proved helpful in preserving pollen as fossils?
Which of the following has proved helpful in preserving pollen as fossils?
- [NEET 2018]
- A
Sporopollenin
- B
Pollenkitt
- C
Oil content
- D
Cellulosic intine
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- [AIPMT 1996]
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Draw the diagram of a microsporangium and label its wall layers. Write briefly about the wall layers ?
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Examine the figure given below and select the right option giving all the four parts $a, b, c$ and $d.$ Correctly identify
$a\quad \;b\quad\;c\quad\;d$
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$a\quad \;b\quad\;c\quad\;d$