Describe palynological evidence, Biology

Assignment Help:

Q. Describe Palynological Evidence?

Palynology is the study of pollen and spores. The taxonomic characters of pollen grains include wall structure, polarity, symmetry, shape and grain size. In angiosperms pollen grains are of two kinds viz. Monocolpate and tricolpate. Monocotpate pollen grains are boat shaped, have one long germinal furrow and one germinal aperture. This is characteristic of primitive dicotyledons and majority of monowtyledons. According to some palynologists the first flowering plants had monocolpate pollen grains. Tricolpate grains are globose, symmetrical, have three germinal apertures and are characteristic of advanced dicotyledons.

1529_Describe Palynological Evidence.png


Related Discussions:- Describe palynological evidence

Arterial conduits and internal mamnrary artery (ima), Arterial Conduits ...

Arterial Conduits LIMA UMA: anastomosis side-t-side with diaganal8 end-lo-sode with LAD Figure: Arterial conduits Internal Mamnrary Artery (IMA)

Explain human development, Explain Human Development? Human development...

Explain Human Development? Human development begins with fertilization, and continues throughout life. Fertilization occurs when two sex cells, a sperm cell and an egg cell, jo

Genetics, The involuntary muscle movement is also genetical sk question #M...

The involuntary muscle movement is also genetical sk question #Minimum 100 words accepted#

Explain about treatment and management of dyslipidemia, Q. Explain about Tr...

Q. Explain about Treatment and Management of Dyslipidemia? Maintenance of blood lipids within the normal range is the most essential objective to prevent the onset/progression

Aschelminthes, in what part of the human body aschelminthes found?

in what part of the human body aschelminthes found?

Post-mating isolating mechanisms, The second category of isolating mechanis...

The second category of isolating mechanism that may permit interspecific mating but ensures reduced viability is called post-mating isolating mechanism. This category could be subd

Describe about the lysosomes enzymes, Describe about the Lysosomes enzymes ...

Describe about the Lysosomes enzymes Within the cytoplasm of the cell, several hydrolytic enzymes (lytic enzymes) capable of hydrolysing proteins, nucleic acids and carbohydra

Photosynthetically active radiation, Photosynthetically Active Radiation ...

Photosynthetically Active Radiation This is usually in direct proportion with the incident solar radiation, you know that tropic$ are probably the best illuminated part of the

Microorganisms acquired during transport of raw food, Microorganisms Acquir...

Microorganisms Acquired During Transport, Handling and Processing of Raw Foods Microorganisms can come from truck, tanker, food handlers and equipment and utensils used in the

Different mechanisms responsible for corneal avascularity, What are the dif...

What are the different mechanisms responsible for corneal avascularity? Various mechanisms responsible for its avascularity are as follows: a) Chemical Theory: I) Role o

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