Explanation:
Guttation is the exudation of water droplets from hydathodes, driven by root pressure under high humidity and low transpiration conditions.
Explanation:
A mature embryo sac (female gametophyte) in angiosperms is 7-celled but 8-nucleate: 3 antipodal cells (3 nuclei), 2 synergids (2 nuclei), 1 egg cell (1 nucleus), and 1 central cell with 2 polar nuclei. Thus total 8 haploid nuclei. The central cell is homodiploid (2 polar nuclei). Double fertilization involves these nuclei. This is typical of Polygonum type of development.
Explanation:
Alzheimer's disease is a progressive neurodegenerative disorder marked by extracellular amyloid-beta plaques and intracellular neurofibrillary tangles of tau protein, leading to memory loss and cognitive decline. Parkinson's involves dopamine neuron loss, multiple sclerosis demyelination, epilepsy seizures.
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