Answer:the vascular tissue in plants that conducts sugars and other metabolic products downward from the leaves.
Explanation:
Answer: C. Homologous chromosomes are separated in meiosis but not in mitosis.
Explanation: There are two main types of division that take place in eukaryotic cells, mitosis, and meiosis. Mitosis is the type of division that is used for growth, repair, and replacement of tissues. Therefore it is not necessary that the cells have different chromosome numbers or are varied genetically in the daughter cells in the case of mitosis.
Meiosis is the division that takes place to form the gametes for sexual reproduction. It is important in the first stages of meiosis I, to introduce variation and to halve the chromosome number.
Chromosomes numbers are halved (from 46 to 23) during meiosis I because the gametes (sperm and egg) come together and fuse during fertilization to form a zygote. When this fusion occurs (23 from the zygote and 23 from the egg), the chromosome number needs to be returned to that of the parent cell (46).
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Genetic variation is introduced during synapsis which only occurs in meiosis, not mitosis. Homologs exchange genetic information during crossing over of synapsis. Entire chromosomes also separate during meiosis I.
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At the end of meiosis, four genetically unique cells are produced with half the number of chromosomes as the parent cell (23 cromosomes) . After the process of mitosis is completed, two cells genetically identical to each pther are produced and have the same number of chromosomes as the parent cell (46 cromosomes).
Genetic variation is actually important because of changing environmental conditions.
The significance of the spore formation during the reproductive cycle of the bacterium is that, it provide a defensive strategy against hostile and unfavorable conditions. The spore formation allows the bacterium to reproduce and spread even when the conditions are not favorable. The spore formation also make it possible for the bacterium to remain dormant over a long period of time during unfavorable conditions, waiting for the right conditions to become active again.
Regional anatomy might focus on studying all of the structures of the ankle and foot.
<h3>What is Regional Anatomy?</h3>
- The shapes, locations, and relationships of the human body's structures in a particular region are the subject of regional anatomy.
- One of the fundamental building blocks of safe and effective medical practice is a thorough understanding of regional anatomy.
- After finishing this course successfully, students should receive knowledge of the major anatomical divisions, such as those of the thorax or upper limb, with an emphasis on the interactions between the numerous systemic structures (such as the muscles, nerves, and arteries) found there.
- Understanding the morphological function of the various body regions in relation to one another and the body as a whole.
- The capacity to employ regional anatomical knowledge to comprehend the underlying anatomical causes of actual biological issues.
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I believe it is B. Hope this helps!!
