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TEA [102]
3 years ago
15

What is the structure used in reproduction in pteridophytes?

Biology
1 answer:
Pepsi [2]3 years ago
7 0
Large floral are used in the reproduction in pteridophytes
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a squirrel dropped an acorn from a branch of an oak tree. which of these will change as the acorn falls from the tree to the gro
Aliun [14]

Answer:

force

Explanation:

i did a test and this was a question and i got it right n i said force

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3 years ago
A farmer notices that the corn in her fields is growing slowly. So she adds twice the normal amount of fertilizer to each field.
Vikentia [17]
<h2>The correct answer is: Eutrophication.</h2>

Explanation:

  • Fertilizers are inorganic o organic nutrients highly rich in elements like nitrogen, potassium and phosphorus which are essential for the growth of plants.
  • The application of excess fertilizers in the soil causes the surface run off as well as leaching of these nutrients into the soil from where it is gradually transferred into the nearby water bodies, in this case the lake adjacent to the farmer's property.
  • In the lake, these nutrients promotes the growth of plants like algae.
  • The excessive growth of algae in the lake disturbs he ecological balance of the lake and causes a dearth of oxygen in it. This phenomenon is said to be called Eutrophication.
  • The reduction in the level of oxygen in the lake causes the animals, like fishes, in it to gradually die.
4 0
3 years ago
Halobacterium has a photosynthetic membrane that appears purple. its photosynthetic action spectrum is the inverse of the action
a_sh-v [17]

Yellow- Green Wavelength of light at peak absorption of 565nm.

Halobacterium is known to be a member of Archaea and they thrive in very salty environment such as Great Salt lake and Dead Sea. Halobacteria under the process of photosynthesis with chlorophyll and they make their ATP from the sunlight using bacteriorhodopsin and halorhodopsin as photosynthetic pigments.

However, photosensory pigements found in Halabacterium were:

1. photosystem 565 which is used to respond to yellow –green light in other for cell to find optimum conditions for ATP synthesis and photophosphorylation and they have peak absorbtion at 565nm.

2. Photosystem 370 nm appears to be responsible for the protective avoidance of blue/UV light.

6 0
3 years ago
Place these in order from broadest to most specific:
yawa3891 [41]
French fries is the answer
7 0
3 years ago
Read 2 more answers
Study of structure, physiology, biochemistry development, evolution, genetics of a cell is called..
emmasim [6.3K]

Cell biology is the correct answer

3 0
3 years ago
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