Spores are living organisms.
Spores are indeed living organisms, and this classification is based on fundamental biological characteristics. Living organisms exhibit certain key traits, such as growth, reproduction, response to stimuli, and metabolism. Spores, which are reproductive cells of fungi, plants, and some bacteria, fulfill these criteria.
In the process of sporulation, a parent organism produces spores as a means of reproduction. These spores contain genetic material and are capable of developing into new, fully functional organisms under suitable conditions. They have the ability to germinate, grow, and eventually reproduce, which are essential attributes of living organisms.
Additionally, spores can respond to environmental stimuli. For example, some fungi release spores when they detect favorable conditions for growth, ensuring their survival and proliferation. This ability to react to the environment further emphasizes their living nature.
In summary, spores are living organisms because they possess the vital characteristics of life, including the ability to grow, reproduce, and respond to stimuli. Their role in the life cycles of various organisms highlights their significance in nature.
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The correct answer is Mitosis.
The mitosis is a type of cell division, in which the parent cell produces a similar type of daughter cell. The daughter cells, which are formed by the process of the mitosis would have the same number of the chromosomes and the ploidy of the daughter cells would also be same as the parents. In the sexual reproduction, the process of meiosis result in the formation of haploid cells during the process of gamete formation. Hence, meiosis, sexual reproduction, and gamete formation are incorrect answers.
Answer:
The correct option is D. Eighteen times more ATP is formed during aerobic respiration than during anaerobic respiration.
Explanation:
Aerobic respiration can be described as the process of respiration taking place in the presence of oxygen. This process makes a lot more energy as compared to anaerobic respiration.
Anaerobic respiration can be described as the process of respiration taking place in the absence of oxygen. This process is one of the earliest reactions that occurred in organisms since the formation of life.
The process of aerobic respiration releases 38 ATP per glucose whereas the process of anaerobic respiration releases 2 ATP molecules per glucose. Hence, the ATP formed during aerobic respiration is approx 18 times more than the anaerobic respiration.
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b. climax communities are not possible
c. dominant organisms drive out pioneer species
d. ecosystems never reach a sustainable point
Correct answer: A) Organisms gradually change the environment
Succession occurs when there is a disturbance in the environment, it would be a minor disturbance like a fire or a major disturbance like a volcanic eruption. Based on the disturbance, succession can be divided into two types:
1). Primary Succession: Primary succession is said to happen when a group of the species or a community evolve from a barren land or a land with no life. This land is fresh and does not have any life on it.
Example: Primary succession occurs after a volcanic eruption
2). Secondary Succession: The secondary succession is said to occur when there is a disturbance and it destroys ecosystem but still there is an availability of nutrient, seed, and soil.
Example: Forest Fire
Succession occurs because organisms gradually change the environment. (Option a.)
Succession is the process by which an ecosystem undergoes changes over time due to the influence of living organisms. It occurs because organisms gradually change the environment they inhabit. In ecological succession, there are two main types:
1. Primary Succession: This occurs in areas where no previous ecosystem existed, such as bare rock, volcanic lava, or newly formed sand dunes. Pioneer species, like lichens and mosses, are the first to colonize such areas. Over time, they break down the rock and create soil, making it possible for other plants and organisms to establish themselves. As the environment changes and becomes more hospitable, the community of species gradually changes, leading to a series of distinct stages until a stable climax community is reached.
2. Secondary Succession: This type of succession occurs in areas that have been disturbed or disrupted, but where soil and some remnants of the previous ecosystem remain. For example, after a forest fire or clear-cutting, the area will undergo secondary succession. Pioneer species, often grasses and shrubs, quickly establish themselves and create conditions for other species to colonize the area. As the ecosystem recovers, different stages of plant and animal communities succeed one another, eventually leading to a climax community that is relatively stable.
In both types of succession, organisms play a significant role in changing the environment, creating conditions that allow new species to establish and eventually leading to a more complex and diverse ecosystem.
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Answer:
Explanation:
Cells divide and reproduce in two ways, mitosis and meiosis.
Mitosis results in two identical daughter cells, whereas meiosis results in four cells.
Keys differences and similarities between the two types of cell division.
Mitosis Meiosis
cells created: two daughter cells four daughter cells
Ploidy Creates diploid daughter cells Creates haploid daughter cells
Genetics Daughter cells are Daughter cells are . . genetically identical genetically different
Why is there a meiosis II but not mitosis II?
Meiosis II is generally regarded as being very similar to mitosis, except for the presence of two parent cells, instead of only one. In both meiosis I and II, cytokinesis occurs, and there are two daughter cells per parent cell.