D. X and Z
16. Which one of the following parts of a
monocot seed is wrongly matched with its
function?
Part
A Micropyle
B. Radicle
C. Testa
Function
Attaches the seed to
the fruit.
Grows into a root
Protects the inner parts of
the seed.
Stores food.
D. Endosperm
17. Which group consists of cereal crops only?
A. Barley, rice, wheat
B. Groundnuts, peas, millet
C. Maize, beans, rice
D. Sorghum, wheat, soya beans

To answer this question, researchers studied populations of the dusky salamander (desmognathus ochrophaeus) living on different mountain ranges in the southern appalachian mountains. the researchers tested the reproductive isolation of pairs of salamander populations by leaving one male and one female together and later checking the females for the presence of sperm. four mating combinations were tested for each pair of populations (a and b)—two within the same population (female a with male a and female b with male b) and two between populations (female a with male b and female b with male a). the proportion of successful matings for each mating combination was measured. for example, when all the matings of a particular combination were successful, the researchers gave it a value of 1; when none of the matings were successful, they gave it a value of 0. then the researchers calculated an index of reproductive isolation that ranged from 0 (no isolation) to 2 (full isolation). the reproductive isolation value for two populations is the sum of the proportion of successful matings of each type within populations (aa + bb) minus the sum of the proportion of successful matings of each type between populations (ab + ba). the table provides data for the geographic distances and reproductive isolation values for 27 pairs of dusky salamander populations.

Drag each description to the correct location on the image. not all descriptions will be used. describe the parts of a comet. the frozen part of the comet the atmosphere of gases and dust formed when the nucleus vaporizes tail made of small, solid dust particles tail made of ions that appears to point away from the comet's orbit

What is the role of dna ligase in the elongation of the lagging strand during dna replication?