Sexual Reproduction

After a sperm cell unites with an egg cell the cells become a ______.

• Zygote

• Blastocyst

• Fetus

• Uterus

Over the next few days, the zygote multiplies and becomes a blastocyst. What happens to the blastocyst go next?

• Fertilization by sperm cells in the blastocyst

• The bones of the embryo begin to harden in the blastocyst

• The second trimester of development begins in the blastocyst

• the blastocyst implants in the wall of the uterus

Which structure of the female reproductive system produces egg cells?

• Uterus

• Ovary

• Vagina

• Fallopian tube

What is a function of the male reproductive system carried out by the structure shown by the number 5?

• to produce and store urine

• to produce egg and sperm cells

• to produce sperm cells and hormones

• to produce the main hormones necessary for growth

Traits that you have are based upon your chromosomes. Chromosomes are tight bundles of what type of molecule?

• proteins

• carbohydrates

• lipids

• DNA

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What is the benefit of sexual reproduction compared to asexual reproduction?

• quick and easy offspring

• genetical variation in offspring

• Exact same DNA as your parents

• Exact same DNA as your siblings

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Which 2 cells have the same chromosome number, if taken from the same species?

• An egg, and a liver cell
• A sperm, and a zygote
• A zygote, and a brain cell
• A zygote, and an ovum.

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Half the _________ in the offspring come from each parent.

• genes

• molecules

• particules

• substances

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Potatoes have a diploid number of 48. How many chromosomes do the gametes(egg and sperm cells) of a potato plant have?

• 96

• 48

• 24

• 12

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Male and female reproductive cells are collectively known as:

• spores

• pollen

• gametes

• offspring

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