Answer:
The correct answer is "B" ACh
Explanation:
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Plants<span> produce hormones and </span>respond to external stimuli<span>, growing towards sources of water and light, which they need to survive. A tropism is a growth in </span>response<span> to a </span>stimulus<span> and an auxin is a </span>plant<span> hormone produced in the stem tips and roots, which controls the direction of growth.</span>
Answer:
The correct answer is option e. "higher water content".
Explanation:
One of the features that make endospores resistant to high heat in its low water content. The cortex of the endospore osmotically removes the water from the interior of the endospore, condition that protects them from heat and radiation. The wimP spores that can be killed by boiling water most likely have a higher water content in comparison to wild-type endospore. This explains why wimP spores are susceptible to be killed with the heat generated by boiling water.
Explanation:
As Earth cooled, an atmosphere formed mainly from gases spewed from volcanoes. It included hydrogen sulfide, methane, and ten to 200 times as much carbon dioxide as today's atmosphere. After about half a billion years, Earth's surface cooled and solidified enough for water to collect on it.
Oxygen plays a critical role in respiration, the energy-producing chemistry that drives the metabolisms of most living things. We humans, along with many other creatures, need oxygen in the air we breathe to stay alive. Oxygen is generated during photosynthesis by plants and many types of microbes.
The correct answer is option (C) transposons or jumping genes.
Barbara McClintock was an american cytogeneticist. In 1940s, she discovered the phenomenon of transposition brought about by the mobile genetic elements or jumping genes or the transposable elements. These jumping genes refers to a sequence of DNA which can change its position in the genome or the genetic constitution of an organism. She discovered these jumping genes in the Maize for the first time and received the nobel prize in 1983.
Jumping genes form a major portion of the eukaryotic genome. They are often responsible for mutations and associated with the duplication of the genetic material. They also cause the structural changes in the chromosomes like inversion, deletion and translocation which are called the chromosomal aberrations.
