During pregnancy, sustained high hormone levels preserve the thick, vascularized uterine lining, preventing it from shedding so that it can continuously nourish and protect the developing embryo and fetus. Class 9 Science Exploration Chapter 11 Important Questions from Reproduction SQP from ...
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Asexual reproduction involves only a single parent and relies entirely on mitotic cell division, copying the genetic code exactly without gamete fusion, crossing over or meiotic gene recombination. Class 9 Science Exploration New Book All Chapter Solution Revise, Reflect, Refine Chapter ...
The correct option is (iv) A is false, but R is true. The zygote undergoes several mitotic divisions while traveling through the oviduct before implanting; it does not attach immediately. Chapter 11 Reproduction How Life Continues Solutions Class 9 Science Reproduction ...
The correct chronological order is (iii) Pollination, (i) Pollen germination on stigma, (ii) Fertilisation and (iv) Formation of zygote, tracing pollen transfer to the eventual fusion of male and female gametes. CBSE Class 9 Science Chapter 11 Reproduction How Life Continues ...
The correct option is (ii) Cross-pollination. Removing the anthers prevents self-pollination, while dusting pollen from a distinct individual plant of the same species onto the stigma guarantees cross-pollination. Class 9 Science Chapter 11 Reproduction How Life Continues Solutions Chapter 11 Reproduction ...