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melomori [17]
3 years ago
11

Relate the development of plant needles to the occurrence of mutations.

Biology
2 answers:
Ivahew [28]3 years ago
8 0

Answer: B

Explanation:

xxMikexx [17]3 years ago
5 0
<h2>Development of Plant Needles</h2>

Explanation:

  • Seed of pitch pine treated with colchicine delivered tetraploid seedlings which had thick and sporadic needles and less fortunate tallness and diameter growth than ordinary seedlings.  
  • In test of colchicine-initiated polyploidy in pines, researcher found that a significant number of the polyploid plants returned to a diploid development in light of the fact that the polyploid cells partitioned at a more slow rate and were overwhelmed by the more quickly developing diploid cells which encompassed them.  
  • The primary needles of both diploid and polyploid plants were more effective at low light intensity than secondary needles, and they had lower compensation points.

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Choose one property of water that makes it unique. Describe the property and explain the chemical or or physical reason that cau
jarptica [38.1K]

Answer:

Water has properties of cohesion and adhesion.

Explanation:

The single Hydrogen atom and double Oxygen atoms attach to each other in such a way their are minute polar polarity differences.  Electron bonds will combine to form one side of the compound as being positive and the other side positive.  Positive side of other H2O molecules will attach to the negative side.  This bond causes water to adhere to sides of a glass test tube.

Will also create a bead when it drips on another non-porous surface.  Adding soap will break the bead (surfactant).  Water is the perfect solvent.

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3 years ago
Ferns and moss plants grow from_________?
Vsevolod [243]

Answer:

mosses and ferns plants are two types of primitive plants both plants are non flowering plants

Explanation:

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3 years ago
1. In the table below, identify each invertebrate by matching it with its characteristics.
erastovalidia [21]

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Sponges are animals which have many cell but no mouth, muscles , heart or brain. They are sessile and can not move from place to place like other animals do, filter feeding animals with an asymmetrical body plan.

Cnidarians are the animals with radial symmetry and stinging cnidocyte cells. These animals consists a special cell cnida which functions in preying catch and defense. example- jellyfish, anemone.

Flatworms are the worm like animal which do not consist a body cavity or coelom. example- fluke and tapeworms.

Roundworms or threadworms are segmented worms that can live in water or land. They consist a body cavity and internal organs. examples- pinworms and hookworms.

Mollusks are the animals which consist mentle, foot and and sometimes a shell. example- octopus, squids.

Echinoderms are the animals which have radial symmetry and an endoskeleton made out of calcareous plate. These animals live only in marine environment.These animals lack circulatory and excretory systems.

Arthopods are the animals with jointed legs and an exoskeleton made out of chitin. example- spiders, shrimps and crabs.



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