1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
yawa3891 [41]
3 years ago
13

What are the approximate coordinates of the star Rigel?

Biology
1 answer:
AnnyKZ [126]3 years ago
8 0

Answer:

approximately 860 light-years (260 pc) from Earth

You might be interested in
How are binary fission and mitosis similar
My name is Ann [436]

Answer:

A

Explanation:

8 0
3 years ago
Gatorade and other sports drinks are hypotonic solutions. How do these drinks rehydrate their users?
Nimfa-mama [501]
Sports drinks contain water, sugar and mineral ions at levels which are most effective at maintaining performance as well as this it also replaces the glucose and maintaining the correct ion/water balance for cells to function effectively.
4 0
3 years ago
Read 2 more answers
Which of the following is true about the Calvin cycle?
katovenus [111]

Answer:

Both ATP and NADPH are needed to make sugars

6 0
3 years ago
The outermost layer of the earth.the layer of the earth were earthquakes occur
Korolek [52]
The outermost layer of the Earth is called the crust.
8 0
3 years ago
What are the three classes of bryophytes?
Margaret [11]

Answer:

Class I: Hepaticopsida ( Liverworts)

Class II: Anthocerotopsida ( Hornworts)

Class III: Bryopsida ( Mosses)

Explanation:

Bryophytes are small plants that grows in moist and shady places.They don't attain great heights because of absence of roots, vascular tissues, mechanical tissues and cuticle. They are terrestrial but require external water to complete their life cycle. Hence they are called as the" amphibians" of the animal kingdom.

Class I: Hepaticopsida or Hepaticae

  • Gametophytic plant body is either thalloid or foliose. If foliose the lateral appendages are  without midrib.
  • Rhizoids without septa
  • Each cell in the thallus contain many chloroplasts
  • Sex organs are embedded in the dorsal surface
  • Capsule lacks columella
  • Sporophyte may be simple having only one capsule or differentiated into root, seta and capsule
  • It has 4 orders: Calobryales, Jungermanniales, Spherocarpales and Marchantiales

Class 2: Anthocerotae or Anthocerotopsids:

  • Gametophytic plant body is simple, thalloid;thallus dorsiventra without air chambers shows no internal differentiation of tissues
  • Scales are absent in the thallus
  • Each cell of the thallus possess a single large chloroplast with a pyrenoid
  • Sporophyte is cylindrical only partly dependent on gametophyte for its nourishment. It is differentiated into bulbous foot and cyclindrical capsule. Seta is meristematic.
  • Endotheciumforms the sterile central column in the capsule. It have ony one order Anthocerotales

Class 3: Musci or Bryopsida

  • Gametophyte is differentiated into prostrate protonema and an erect gametophores
  • Gametophore ids foliose, differentiated into axis and lateral appendages like leaves but without midrib.
  • Rhizoids are multicellular with oblique septa
  • Elaters are absent in the capsule of sporangium
  • The sex organs are produced in seperate branches immersed in a group of leaves.
  • It has only three orders: Bryales, Andriales and Sphagnales

Bryophytes are used as a packaging material for fragile goods, glasswares etc.Mosses are good source of animal food in rocky and snow clad areas. Decoction prepared by boiling Sphagnum in water  is used for the treatment of eye disease.

3 0
3 years ago
Other questions:
  • The part of an atom that would be found outside the nucleus is the _______. A. electron B. positron C. neutron D. proton
    10·2 answers
  • In a forest, a tree falls on a swamp and kills the worm population reducing the population by half. The remaining population is
    10·1 answer
  • DNA replication results in two-double stranded DNA molecules having nucleotides base sequences that re identical to each other a
    8·1 answer
  • Why is it dangerous to a fetus for the pregnant mother to smoke cigarettes?(3 points)
    14·2 answers
  • The insect shown in the picture has the ability to walk on the surface of water. Explain what property of water makes this possi
    14·1 answer
  • A human born prematurely during the third trimester will be in the greatest danger due to
    12·1 answer
  • The diagram shows a football field that represents a geological time scale.
    5·2 answers
  • Chromosomes are...
    8·1 answer
  • What are the cons of purchasing a home? A. Buyers are typically required to buy homeowner's insurance. B. Home owners have to pa
    7·1 answer
  • The question is in the picture
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!