The meristematic tissue responsible for secondary growth in dicot plants is: MCQ with Answer and Explanation

Explanation:
The secondary oocyte is arrested in metaphase II of meiosis and is ovulated. Meiosis II is completed only when a sperm penetrates the oocyte, producing a mature ovum and a second polar body. If fertilization does not occur, the secondary oocyte degenerates. This ensures that the egg is only fully mature upon fertilization.

Explanation:
Nitrification is a two-step process: oxidation of ammonia to nitrites by bacteria like Nitrosomonas, and then nitrites to nitrates by Nitrobacter. Ammonification is the release of ammonia from organic matter. Denitrification reduces nitrates to N₂ gas. Nitrogen fixation converts atmospheric N₂ to ammonia. Nitrification makes nitrogen available to plants as nitrates, which are easily absorbed.

Explanation:
Fungi reproduce asexually primarily through the formation of spores, which are produced in large numbers in specialized structures like sporangia (in Rhizopus) or conidiophores (in Aspergillus). These spores are highly resistant and can be dispersed by wind, water, or animals. Some fungi, like yeast, also reproduce asexually by budding.