The Nervous System and Sense Organs — Biology STD 10 — Question

Diffusion is the movement of molecules from a region of their ________ concentration to the region of their ________ concentration.

_____________ is most widely used for the artificial ripening of fruits.

The release of hot water into rivers causes ______.

Meiosis occurs only in _______ cells.

The three distinct types of blood vessels are ____________, ____________ and ____________ .

Openings found on the undersurface of the dorsiventral leaf are ___________.

Mitosis produces two daughter cells whereas meiosis produces ______ daughter cells.

Leaves are broad and flat to increase the surface area for photosynthesis.

The hepatic portal system is essential in the human body as it primarily functions in the _______ (i) _______ of nutrients from the gastrointestinal tract. After absorption, these nutrients are transported directly to the _______ (ii) _______ , where they undergo further processing and detoxification. This system is crucial in metabolizing various substances, including _______ (iii) _______ , and plays a significant role in maintaining the _______ (iv) _______ levels in the blood. By doing so, the hepatic portal system significantly contributes to the overall _______ (v) _______ balance in the body.

A variegated leaf (one that has green as well as white patches) will only photosynthesize in the green areas.