Focus On Life Science: California Grade 7

Lesson 1: Sexual Reproduction and Meiosis

Standards Check

1.
The cell that is formed when fertilization occurs is called __________. 2.b
A)a ladder
B)a mutation
C)a zygote
D)a cytoplasm
2.
How many chromosomes are in human sex cells? 2.b
A)46
B)23
C)8
D)1
3.
A male tiger contributes sperm to a females tiger's egg to produce a zygote. The process that produces haploid sex cells is __________. 2.b
A)fission
B)mitosis
C)meiosis
D)interphase
4.
The process of meiosis ensures that organisms will have __________. 2.b
A)the same diploid number as its parents have
B)a different haploid number than its parents have
C)different numbers of chromosomes than its parents have
D)the ability to reproduce by budding
5.
If a diploid tomato cell has 24 chromosomes, how many chromosomes will the tomato's sex cells have? 2.b
A)6
B)12
C)24
D)48
Grade 7
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