AP BIOLOGY

PLANTS

ROOTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A sweet potato is an example of a ____
A
Tuber
B
Rhizome
C
Bulb
D
Tap Root
Explanation: 

Detailed explanation-1: -Potato and sweet potato are examples of analogous organs. Both sweet potato and potato have a common function i.e., storage of food in the form of starch. But they both differ in structural origin as the sweet potato is a root tuber, while the potato is a stem tuber.

Detailed explanation-2: -Unlike regular potatoes, which are tubers, sweet potatoes are considered to be root vegetables. The root, however, is described as a tuberous root. Both sweet and regular potatoes grow under the soil, but they are very different when it comes to density, taste and nutrition.

Detailed explanation-3: -The sweet potato or sweetpotato (Ipomoea batatas) is a dicotyledonous plant that belongs to the bindweed or morning glory family, Convolvulaceae. Its large, starchy, sweet-tasting tuberous roots are used as a root vegetable.

Detailed explanation-4: -Solution : Both potato and sweet potato are tuberous (i.e., consisting of knobs) swollen plant parts having no definite shapes. They function in food storage. Therefore, they are called tubers.

Detailed explanation-5: -The potato is a typical tuber, as is the Jerusalem artichoke. The term is also used imprecisely but widely for fleshy roots, corms, or rhizomes of other plants that resemble tubers-e.g., the “tuber” (actually a tuberous root) of a dahlia.

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