Answer:
Pollination is an external process. Pollination agents are wind, water, birds, insects, and other animals. Fertilization takes place by growing pollen tube which enters the ovule. External factors are required
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Dr. Evil has just discovered a way to prevent mating from occurring during meiosis in the gametes of his lab rats. the effects her discovery would have on laboratory mice is that prophase I would be interrupted and there would be reduced genetic variation in the offspring of the mice. because crossover occurs during prophase I of meiosis I and results in genetic recombination, which promotes genetic variation. If this is avoided, genetic variation would be significantly reduced in the offspring.
<h3>What happens in prophase 1?</h3>
Prophase I – in this stage, the condensation of the chromosomes occurs; the temporary disappearance of the carioteca; disappearance of the nucleolus and the duplication of centrioles to the poles of the cell. In prophase, the exchange of genes (crossing-over) also takes place, through the exchange of pieces between homologous chromosomes.
With this information, we can conclude that Prophase I is the first stage of meiosis I. In it, the pairing of homologous chromosomes occurs and a phenomenon known as crossing-over can occur.
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Answer: B. Level 1
Explanation:
The prairie community is dominated by the grass and vegetation cover. Thus the lower most trophic level in the prairie ecosystem are the short and tall grasses. They produce major source of biomass for the herbivores of the food chain. They consume the grasses can be designated as primary consumers of the food chain. Also the producers which are grasses which make up the large amount of biomass will provide a source of food for the consumers. They will receive 100 percent energy from the sun and they will utilize 90 percent of it to make their food by the process of photosynthesis. Only ten percent of energy is transferred to the next trophic level.
Answer:
the bacteria would continue to grow untill the agar is completly corroded as the bacteria eats away at it, after the agar is consumed the bacteria would die away as it doesnt have the sufficient nutrients to live
Explanation:
Answer:
Grass
Explanation:
Grass is the producer in the given food chain.
Note : -
Grasses are green plants which synthesize food ( carbohydrate ) in presence of sun light in the process of photosynthesis. That's why grass is called producers.
