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NCERT Solutions for Class 10 Science and important questions for CBSE class 10 for session 2020-2021
Self-pollination occurs when pollen from a flower’s anther falls on its own stigma, ensuring genetic similarity. Cross-pollination occurs when pollen from one flower reaches the stigma of another, promoting genetic variation. extra cbse sample paper download on Tiwari Academy latest cbse sample ...
The developing embryo gets nutrition from the mother’s blood through the placenta. Nutrients and oxygen pass from maternal blood to the embryo, while waste products move from the embryo to the mother for disposal. CBSE Sample Paper Class 10 Science 2025-26 Tiwari ...
When the egg is not fertilized, the thickened uterine lining, which was prepared for implantation, breaks down and is shed along with blood and mucus through the vagina. This cyclic process is called menstruation in females. sample paper for class 10 ...
(i) Fertilization in human females takes place in the **oviduct (fallopian tube). (ii) The uterus prepares for embryo implantation by thickening its inner lining, the endometrium, which becomes soft, spongy, and richly supplied with blood vessels. cbse class 10 science half ...
In herbivores, the small intestine is very long because plant-based food, rich in cellulose, takes longer to digest. In carnivores, it is comparatively shorter as meat is easier to digest. Thus, intestine length depends on the type of diet. 2025-26 sample ...
