Types of growth, Biology

Assignment Help:

KINDS OF GROWTH -

1.      AUXETIC GROWTH -

Body grows by enlargement of its cells without increase in number of cells.

eg. Nematodes, rotifers, tunicates. Growth of body muscle by excercise.

2.      MULTIPLICATIVE GROWTH -

It is due to increase in the number of cells as common in embryo.

3.      ACCRETIONARY GROWTH -

In post embryonic devlopment power of cell division is lost.

At some places reserve cells present, divide, producing new cells to replace the worm out cells, eg. Stratum malpighi

4.      APPOSITIONAL GROWTH -

It involves the addition of new layer on the previously formed layers.

eg. in cell wall. Addition of lamella in the formation of bone.


Related Discussions:- Types of growth

Factors that effect birth weight and gestational duration, Define Factors t...

Define Factors that effect birth weight and gestational duration? A WHO review has identified 43 factors that influenced birth weight and gestational duration. They are grouped

Explain vegetable sterilization process, Explain vegetable sterilization pr...

Explain vegetable sterilization process Canning, which involves heat sterilization, is one of the most important processes in vegetable preservation. As compared to other foods

Function of the cornified layer of the skin, What are the main functions of...

What are the main functions of (a) the basal (Malpighian) layer, (b) the cornified layer of the skin?   (a) The basal (Malpighian) layer makes new skin cells and the pigment

Explain the generalities, Explain the Generalities? A binary system has...

Explain the Generalities? A binary system has two components; C equals 2, and the number of degrees of freedom is F = 4 - P. There must be at least one phase, so the maximum po

Cavities in cork, Q. In 1665 Robert Hooke, an English scientist, published ...

Q. In 1665 Robert Hooke, an English scientist, published his book Micrographia, in which he explained that pieces of cork viewed under the microscope presented small cavities simil

Myofilaments of myofibrils, Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Project, occurrence of e.coli 0157:H7 on vegetables

occurrence of e.coli 0157:H7 on vegetables

Sporogenous tissue, complete definition of Sporogenous tissue

complete definition of Sporogenous tissue

What was lamarcks explanation for the succession, What was Lamarck's explan...

What was Lamarck's explanation for the succession of fossils in a given location? ps: I want to the idea for the succession of fossils, not the whole difference between Darwin and

Define working of kidney in excretion of zinc in humans, Define working of ...

Define working of Kidney in excretion of zinc in humans? Very small amount of zinc is excreted in the urine (0.3-0.7 mg/day), as most of the zinc filtered by the kidney is reab

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd