The letter "B" in the above figure represents

a. sclerenchyma fibers.
b. parenchyma.
c. xylem.
d. epidermis.
e. phloem.


B

Biology & Microbiology

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An allele is

a. the dominant form of a gene. b. an alternate form of a gene. c. always recessive. d. the main factor determining a trait. e. always one of a pair.

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For a species with a haploid number of 23 chromosomes, how many different combinations of maternal and paternal chromosomes are possible for the gametes?

A) 23 B) 46 C) about 1000 D) about 8 million

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A cell from a wheat plant contains all of the following EXCEPT a

A) flagellum. B) cell wall. C) cytoskeleton. D) chloroplast. E) mitochondrion.

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