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Self-Pollination - Types of Pollination
Self-pollination refers to the transfer of pollen grains from the anther to the stigma of the same flower. In chasmogamous flowers the mature anthers and stigma are exposed to pollinating agents. In cleistogamous flowers fertilization is accomplished without exposing the sex organs (cleistogamy) to the atmosphere. Commelina benghalensis produces both chasmogamous (aerial) and cleistogamous (underground) flowers. Conversion of chasmogamous flowers to cleistogamous type depends on environment conditions, like temperature.
Mechanism of Stomatal Opening It has been known for over a century that stomata open because of reversible turgor changes in the guard cells. Stomata open when turgor in the g
The lower course - Classification of the river The lower course of the river occurs in the plains, across which it meanders or zigzags slowly. The river here loses much of its
Ways to adapt to stress Now that you know the nature of stress, let us see what type of strategies plants have acquired to adapt to stress. You know that biological functions
Q Are there living beings without cells? Viruses are considered the only living beings that do not have cells. Viruses are constituted by genetic material RNA or DNA enwrapped
How does being able to reproduce asexually benefit the plant?
What is the tallness trait of a pea plant moving separately from the color trait an example of? This is an instance of Mendel's second law, the Law of Independent Assortment, w
Foscarnet (Foscavir) Foscarnet is an alternative to ganciclovir and valganciclovir for treatment of CMV infection. It is approved for use in CMV retinitis, including progress
These are areas where woody shrubs predominate rather then trees. In regions with a Mediterranean type of climate i .e., hot dry summers and cool wet winters, shrubs grow close tog
Explain the types of Carrageenan It was first produced commercially from the red algae, Chandrus crispus, found along the northeast shores of the U.S and Canada and referred t
What are zymogens? Zymogens, or proenzymes, are enzymes secreted in inactive form. Under some conditions a zymogen shifts to the active form of the enzyme. Zymogen secretions i
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