Question

4.10 hw - sexual reproduction1. the arrows in the diagram below illustrate processes in the life of a species that reproduces sexually.which processes result directly in the formation of cells with half the amount of genetic material that is characteristic of the species?a) 1 and 2b) 2 and 3c) 3 and 4d) 4 and 52. a sperm cell of a human has 23 chromosomes.• is the sperm cell a body cell or a sex cell? _____________• is the sperm cell haploid or diploid? ___________• when sperm combine with an egg cell, how many chromosomes will the zygote have? ___________3. the diagram below shows stages of human reproduction.the direct result of fertilization is represented ata) ab) bc) cd)4. the diagram below represents a process that occurs during human reproduction.• the process represented by the arrow is called ___________• (true or false) the process will ensure that the fertilized egg contains a complete set of genetic information ___________5. in which region of the flower represented below do haploid male gametes exist? ____what is the name of the male reproductive / gamete cell in plants? _____________

Explanation:

Step1: Analyze Q1: Haploid cell formation

Processes 1 and 2 make gametes (sperm/egg) with half the genetic material of adult diploid cells, via meiosis.

Step2: Analyze Q2: Sperm cell properties

1. Sperm is a sex cell (gamete) for reproduction.
2. Sperm has 23 chromosomes, so it is haploid (n).
3. Zygote = sperm (23) + egg (23) = 46 chromosomes.

Step3: Analyze Q3: Fertilization result

Fertilization joins sperm and egg to form a zygote, which is stage C in the diagram.

Step4: Analyze Q4: Fertilization process

1. The arrow shows sperm + egg → zygote, this is fertilization.
2. Fertilization combines haploid gametes, so the zygote has a full genetic set: TRUE.

Step5: Analyze Q5: Plant male gametes

1. Haploid male gametes (sperm cells) exist in region B (anther of the stamen).
2. The male gamete cell in plants is sperm (pollen grain contains sperm cells).

Answer:

1. A) 1 and 2

2.

• sex cell
• haploid
• 46

1. C) C

4.

• fertilization
• TRUE

5.

• B
• sperm (contained in pollen)