STD 11 - 11. photosynthesis in higher plants — BIOLOGY STD 11 Science — Question

$(a)$ It is also called as the earlywood

$(b)$ In spring season cambium produces xylem elements with narrow vessels

$(c)$ It is lighter in colour

$(d)$ The springwood along with autumnwood shows alternate concentric rings forming annual rings

$(e)$ It has lower density

Choose the correct answer from the options given below:

$(a)$ Stimulates the process of bone resorption

$(b)$ Decreases $Ca ^{2+}$ level in blood

$(c)$ Reabsorption of $Ca ^{2}+$ by renal tubules

$(d)$ Decreases the absorption of $Ca ^{2+}$ from digested food

$(e)$ Increases metabolism of carbohydrates

Choose the most appropriate answer from the options given below: