What are 'pneumatopores' ?? how do they help the plant ? ? give an eg.

Answers

Answer 1

Answer: neumatophores are erect roots that are some form of upward appendage or extension of the root system can obtain oxygen in an otherwise anaerobic substrate They also help in aeration. eg red mangrove,swampy plants:

Answer 2

Answer: pneumatopores specialized 'breathing' root developed in some plant species that grow in waterlogged or strongly compacted soils, e.g-mangroves. The aerial part of the root contains many pores, enabling gas exchanges with the atmostphere. Internally, a well developed system of incellular spaces allows gases to diffuse throughout the submerged portion of the roots

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Humans are not the only animals that pollute the air. TRUE OR FALSE

Answers

TRUE

Pollution can be defined as the introduction of biological matter, particulate and chemicals that are harmful to humans, plants and animals. pollution can also cause damage to natural environment. However, animal digestion can cause natural air pollution by releasing methane which is a greenhouse gas.

Answer: True

Explanation: Human beings pollute the air by undergoing several activities like burning of fossil fuels, combustion of the fuels by the automobiles, emission of hazardous gases from industrial and agricultural wastes. But human beings are not only responsible for this pollution but animals like cattles (cow, baffallo) excreate a large amount of dung which is a source of greenhouse polluting gas called as methane.

Which two biogeochemical cycles depend directly on photosynthesis?

Answers

The answer is "The oxygen cycle and carbon cycle".

In Earth science, a biogeochemical cycle or substance turnover is a pathway by which a synthetic substance travels through both the biotic (biosphere) and abiotic (lithosphere, air, and hydrosphere) parts of Earth.

Uh…did i do this right?

Answers

Maybe

$\red{ \rule{500pt}{1000pt}}$

This is just ruler command 500pt and 1000pt for long rule

Yes I think you did:))

Which of the following correctly explains why viruses are not classified with either Prokaryotic or Eukaryotic organisms?

Answers

All living organisms are divided in into prokaryotic (lacking a nucleus) and Eukaryotic cells - with a nucleus. Viruses form an exception because they are not exactly "living organisms" - they cannot live outside of their hosts (they have to live in another cell, so they are not a cell by themselves) - the answer is that they cannot live by themselves, only withing other cells (prokaryotic or eukaryotic)

Eukaryotes are different from prokaryotes because eukaryotesA. are much smaller.
B. have permeable membranes.
C. reproduce more frequently.
D. have nuclei.

Answers

Eukaryotes have nuclei

The correct answer is D.

Which of these animal groups was NOT present by the end of the Cambrian? bryozoans arthropods chordates mollusks

Answers

Only phylum bryozoans were not present during Cambrian period. It is an extensive fossil that did not appear in Cambrian nor pre-cambrian rocks. Bryozoans are found in the early Ordovician period. It could have probably existed during the Cambrian period but were soft-bodied or not preserved.

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