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Maksim231197 [3]
3 years ago
11

2. Describe a technique for measuring photosynthetic rate.

Biology
2 answers:
riadik2000 [5.3K]3 years ago
8 0
Measuring photosynthesis via the production of oxygen. Oxygen can be measured by counting bubbles evolved from pondweed, or by using the Audus apparatus to measure the amount of gas evolved over a period of time.
Gekata [30.6K]3 years ago
3 0

Since carbon dioxide is used up during the process, and oxygen produced, the rate of photosynthesis can be measured directly, by measuring either the production of oxygen or the uptake of carbon dioxide. For instance, aquatic plants (plants in water) release oxygen bubbles during photosynthesis which can be measured.

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Lesechka [4]

Answer:

B) oaks and other sexually reproducing, extant (currently living) trees

Explanation:

The biological species concept defines the species on the basis of their reproductive isolation. It states that when individuals are able to interbreed to produce fertile and viable progeny, they belong to the same species. The members of different biological species cannot interbreed. If they interbreed, either pre-zygotic or post-zygotic isolation mechanisms do not allow the production of fertile progeny.

Therefore, the biological species concept can be applied to the organisms that are able to reproduce sexually. The asexually reproducing organisms would not exhibit any reproductive isolation which is a key criterion to group organisms under different species. Among the given examples, biological species concept can be applied to the sexually reproducing extant trees such as oak.

Since we cannot deduce the reproductive isolation in sexually reproducing extinct species, the concept is not useful for dinosaurs which are extinct now.

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the answer is c)mantle

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