9th Class Biology – Short Questions & Answers
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Define xylem.
Xylem is a type of vascular tissue in plants responsible for transporting water and minerals from the roots to other parts of the plant.
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Define interphase.
Interphase is the phase in the cell cycle when the cell is not dividing, and it undergoes growth, DNA replication, and preparation for cell division.
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What is phloem?
Phloem is a vascular tissue responsible for transporting food (mainly sugars) produced in the leaves to other parts of the plant.
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What is mitosis?
Mitosis is the process of cell division that results in two genetically identical daughter cells.
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Name the types of animal tissues.
The main types of animal tissues are: 1. Epithelial tissue 2. Connective tissue 3. Muscular tissue 4. Nervous tissue
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Name the stages of mitosis.
The stages of mitosis are: 1. Prophase 2. Metaphase 3. Anaphase 4. Telophase
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What is epithelial tissue?
Epithelial tissue forms the protective layer on body surfaces and lines internal organs. It also functions in absorption, secretion, and filtration.
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Define meiosis.
Meiosis is a type of cell division that reduces the chromosome number by half, producing four non-identical daughter cells, which are essential for sexual reproduction.
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Define connective tissue.
Connective tissue supports and binds other tissues in the body. Examples include bone, blood, and adipose tissue.
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Differentiate between mitosis and meiosis.
Mitosis results in two genetically identical diploid cells, while meiosis results in four genetically different haploid cells. Mitosis occurs in somatic cells, whereas meiosis occurs in germ cells.
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