Life Cycle of Sexual Reproducers quiz #6 Flashcards
Life Cycle of Sexual Reproducers quiz #6
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How many chromosomes are present in a human gamete?
A human gamete contains 23 chromosomes. Which two statements correctly describe the life cycles of mosses and angiosperms?
Mosses have a dominant gametophyte stage, while angiosperms have a dominant sporophyte stage. Which is an example of sexual reproduction?
Fertilization in flowering plants is an example of sexual reproduction. What does it mean if members of a population live long enough to reproduce?
If members of a population live long enough to reproduce, it means they have successfully passed on their genes to the next generation. How many chromosomes does a gamete contain?
A gamete contains 23 chromosomes in humans. About how many months does the complete life cycle of a pine typically take?
The complete life cycle of a pine typically takes about 24 months. How many copies of each chromosome does a gamete (sex cell) contain?
A gamete contains one copy of each chromosome. Which is an advantage of sexual reproduction compared to asexual reproduction?
An advantage of sexual reproduction compared to asexual reproduction is increased genetic diversity. Which of these is one of the advantages of asexual reproduction?
One of the advantages of asexual reproduction is rapid reproduction without the need for a mate. How many chromosomes do gametes have?
Gametes have 23 chromosomes in humans. How are moss gametes produced?
Moss gametes are produced by the gametophyte through mitosis. In which group is the sporophyte stage dominant in the alternation of generations?
The sporophyte stage is dominant in the alternation of generations in ferns and seed plants. Which of the following is a benefit of sexual reproduction when compared to asexual reproduction?
A benefit of sexual reproduction when compared to asexual reproduction is increased genetic diversity. What is not a benefit of asexual reproduction compared to sexual reproduction?
A lack of genetic diversity is not a benefit of asexual reproduction compared to sexual reproduction. Which statement regarding sexual and asexual reproduction is true?
Sexual reproduction results in genetic diversity, while asexual reproduction produces genetically identical offspring. What are the three life cycles of plants?
The three life cycles of plants are haplontic, diplontic, and haplodiplontic (alternation of generations). How many chromosomes does each human receive from each of his parents?
Each human receives 23 chromosomes from each parent. What is the genetic relationship between a sporophyte and the spores it produces?
The sporophyte is diploid and produces haploid spores through meiosis. Which structure is involved in the reproduction of this plant? spores pollen cones fruit
Pollen is involved in the reproduction of plants. Which of these refers to parthenogenesis?
Parthenogenesis refers to a form of asexual reproduction where an organism develops from an unfertilized egg. In the life cycle of an angiosperm, what is the role of the gametophyte?
In the life cycle of an angiosperm, the gametophyte produces gametes for fertilization. Which of the following is not a life cycle similarity between plants and animals?
Alternation of generations is not a life cycle similarity between plants and animals. What are the similarities between the bee’s three offspring?
The bee's three offspring share genetic material from the same parents, resulting in similarities in their genetic makeup. What is the main difference between mitosis and meiosis in the life cycle of sexual reproducers?
Mitosis produces identical diploid cells for growth and development, while meiosis produces haploid gametes for sexual reproduction. What process restores the diploid chromosome number in sexual reproducers?
Fertilization restores the diploid chromosome number by merging two haploid gametes. How does a zygote develop into a multicellular organism?
The zygote undergoes mitosis, producing many cells and developing into a multicellular organism. What is the chromosome number of a human gamete?
A human gamete is haploid, containing 23 chromosomes. How do offspring inherit genetic material from their parents?
Offspring inherit one set of chromosomes from each parent, resulting in a diploid zygote with genetic material from both. What is the scientific term for sex cells in animals?
The scientific term for sex cells in animals is gametes. What does 'diploid' mean?
Diploid means having two sets of chromosomes, one from each parent. What is the result of fertilization in sexual reproduction?
Fertilization results in the formation of a diploid zygote. What is the first cell of a new organism called?
The first cell of a new organism is called a zygote. What is the ploidy of an adult human?
An adult human is diploid (2n). What happens to the chromosome number during fertilization?
The chromosome number doubles, restoring diploidy as two haploid gametes fuse. What process allows a single-celled zygote to become a baby with trillions of cells?
Mitosis allows the zygote to divide and develop into a multicellular baby. What is the main function of mitosis in the life cycle?
The main function of mitosis is growth and development of the organism by producing identical diploid cells. How many copies of each chromosome does a diploid cell have?
A diploid cell has two copies of each chromosome. What is the relationship between gametes and zygotes in the life cycle?
Gametes fuse during fertilization to form a zygote, starting a new organism's life cycle. What is the significance of the zygote being diploid?
The diploid zygote contains genetic material from both parents, allowing for genetic variation and proper development. Why is understanding meiosis important for understanding sexual reproduction?
Understanding meiosis is important because it explains how genetic diversity is generated and how chromosome number is maintained.
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