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
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.

You might be interested in
Biological systems examples that can be found during a nature walk, such as cellular respiration ​
Alex
You can also find photosynthesis, the carbon cycle, the water cycle and others
6 0
2 years ago
Match the following. 1. period during the life of a cell when it has finished mitotic division G1 phase 2. period during the lif
zimovet [89]

Ans.

The cell cycle includes a series of events that results in the formation of daughter cells from a single parent cell. These events include interphase, followed by M phase. The interphase consists of three phases, G0 (Gap 0) phase, G1 phase, S (synthesis) phase, G2 phase, while the M phase consists two phases, karyokinesis (mitotic or meiotic phase) and cytokinesis. At the end of cell cycle, cell enters into G0 phase again and the cycle goes subsequently.

The sequesnce of cell cycle events can be written as follows:

G0→G1→S→G2→M→G0→G1→....

Thus, according to the cell cycle sequence, these terms can be matched as:

1. When a cell finishes its mitotic division, it enters to G0 phase, which is also known as rest phase. Thus, statement 1. matches with G0 phase.

2. The period between end of mitosis and synthesis of genetic material for next mitotic division shows G1 phase, in which cell prepares itself for division. Thus, statement 2. matches with G1 phase.

3. The period of interphase between synthesis of new genetic material and the beginning of mitosis is G2. Thus, statement 3. matches with G2 phase.

4. The period between two mitotic division is interphase. Thus, statement 4. matches with interphase.

5. The period of cell division, during which a cell is performing actual cell division is M phase. Thus, statement 5. matches with M phase.

6. The period of interphase, during which genetic material gets doubled is synthesis or S phase. Thus, statement 6. matches with S phase.


6 0
3 years ago
Read 2 more answers
Enzymes in saliva begin the chemical digestion of _________. fats carbohydrates protein. vitamins
Semmy [17]
Hope this helps a little :)

8 0
3 years ago
In early pregnancy, what hormone stimulates growth of the corpus luteum?.
Goshia [24]

Answer:

Human chorionic gonadotropin (HCG) stimulates the corpus luteum to grow and secrete estrogen and progesterone.

Explanation:

I want to be an OBGYN!

8 0
3 years ago
Read 2 more answers
Gentoo penguins will present a mate with a pebble that they find to attract a mate. Emperor penguins have a specific call and mo
Mrac [35]
<span>B is the right answer. Gentoo and Emperor penguins employing different mating rituals is an example of behavioral isolation. Behavioral isolation is the umbrella term for a host of differences between species, although in the case of different mating behaviors this variety of behavioral isolation is intended to prevent cross-breeding between different members of the same species in the same environment.</span>
7 0
3 years ago
Read 2 more answers
Other questions:
  • A scientist discovered a new cell; however, the scientist is not certain as to the type. the cell contains a central vacuole, a
    6·1 answer
  • Within the global water cycle, water is stored for the shortest amount of time in…
    6·1 answer
  • What kind of cell will you find in a leaf of a tree that you wouldnt find in a fingernail
    13·1 answer
  • Coral reefs are unaffected by pollution.<br> true or false
    13·1 answer
  • The pigment chlorophyll is contained in _____.
    13·1 answer
  • Which diseases or disorders affect the spinal cord?
    7·1 answer
  • A bumblebee helps plants reproduce by carrying pollen from a flower on one plant to a flower on another plant. Which reproductiv
    12·1 answer
  • What is the complementary strand for the DNA strand below?
    7·2 answers
  • Earth Science Final Exam 2020-2021 (385) | 2 of 40
    9·1 answer
  • What food item will provide 1 mole of sodium in the least mass? What is that mass?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!