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MA_775_DIABLO [31]
3 years ago
11

A student creates a model of a closed ecosystem by filling a glass tank half full with water then addin 10 snails and two small

aquatic plants .the next day all the snails are dead. Which is the most likely cause if their death
Biology
1 answer:
vredina [299]3 years ago
4 0
1. Snails carry out respiration only 2. Aquatic plants carry out both respiration and photosynthesis Although the aquatic plants can absorb carbon dioxide and release oxygen through photosynthesis, the amount of snail is much more than that of the aquatic plants. During night time,the absence of light prevent the plants from carrying out photosynthesis. No oxygen is released at this time. There is a net release of carbon dioxide in the closed system and hence the snail died of suffocation.
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Answer:

The correct answer will be- will be called "Clones" with no genetic variation thus result in less adaptability to environment.

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Plants can reproduce by both modes of reproduction called asexual and sexual reproduction.   The asexual mode of reproduction produces genetically similar offsprings in less period of time and thus helps in spreading of the species in minimum time as in the case of Kalanchoe.

The Kalanchoe can dominate a large area of the habitat using this mode of reproduction but at the cost of genetic variation.  

Since asexual reproduction results in Clones with same genetic material so the descendants of the plant will be less adaptive to changing the environment as asexual reproduction does not involve genes.

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