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
Hatshy [7]
3 years ago
12

Part a the adaptation that made possible the colonization of dry land environments by seed plants is most likely the result of t

he evolution of _____. see concept 30.1 (page 636) view available hint(s) the adaptation that made possible the colonization of dry land environments by seed plants is most likely the result of the evolution of _____. see concept 30.1 (page 636) heterospory cones ovules sporophylls pollen
Biology
1 answer:
ki77a [65]3 years ago
6 0
<span>Part a the adaptation that made possible the colonization of dry land environments by seed plants is most likely the result of the evolution of pollen.</span>
 The main advantage of seed plants (Gymnosperms and Angiosperms) is the evolution of the seed which, unlike spore-producing plants, was not limited to wet environments. Pollen grains are male gametophytes (sperm) which are protected from desiccation and can reach the female organs without dependence on water. The sperm is transferred from the pollen through the pollen tube: an extension of a cell within the pollen grain. The process is called pollination.
You might be interested in
in an organism a muscle cell has the same DNA as a nerve cell yet the cells perform different functions this is possible
Darina [25.2K]
This is possible by having different stem cells for different types of cells which then have different genes activated to make cells different
6 0
3 years ago
Blood can beCenter figured into plasma white blood cells and red blood cells
Inessa [10]
That red blood is when you have like a type of blood like a blood and B blood and who's leham white blood cells come from animals
6 0
3 years ago
Layers of epithelial tissue that serve as barriers to pathogens is called
Effectus [21]

Answer:

The correct answer is: Mucus membrane.

Explanation:

  • The lining of the epithelial tissue forming the mucus membrane contains some specialised cells which are called the Goblet cells.
  • These cells secrete a slippery substance called the Mucus.
  • The Mucus is a dense, aqueous and slippery substance that is composed of anti-microbial enzymes like lysosyme, immunoglobulins (antibodies) and glycoproteins like mucins.
  • The mucus secreting cells line the internal tracts of the body that come into contact with outside environment, like the respiratory tract, alimentary canal, urino-genital tract.
  • If any microbial pathogen gain access into any of these tracts the lysosyme in the mucus causes the microbial cells to undergo lysis, hence killed.
  • The immunoglobulins, on recognising a pathogen, activate the immune cells of the body to fight against the intruding pathogen.
6 0
3 years ago
Which best describes the difference between physical and chemical changes
Doss [256]

Answer:

ExA physical change is a change from one state of matter to another; a chemical change results in a new substance formed. A chemical change does not result in a new substance being formed, whereas a physical change does.planation:

5 0
3 years ago
How do the retinas of the eyes of night-hunting animals differ from the retinas of animals that hunt during the daytime? Questio
rewona [7]
Well A seems to be the answer because during the night time your rods are stimulated more, meaning you use the more at night
5 0
3 years ago
Read 2 more answers
Other questions:
  • What does HS- stand for in medical abbreviations
    13·2 answers
  • Which of the follling is not true about detuals view?
    8·1 answer
  • A measurement that determines how often the allele (gene variant) expression of a particular gene arises in a population and is
    8·1 answer
  • Which statement is true for both plant and animals cells?
    10·1 answer
  • Which of the following does not represent a fundamental reason as to why all poverty relief programs that create or perpetuate d
    5·1 answer
  • If a blue light shines on a green dress what colour would the dress be?​
    12·1 answer
  • Adrenocorticotropic hormone​
    14·1 answer
  • What provides an image that is three dimensional representation with little magnification
    7·1 answer
  • How does nuclear fusion make life on Earth possible?
    15·2 answers
  • El pelaje de un cobayo negro es una característica dominante, y el de una cobaya blanca es recesivo. Cuando una cobaya negra y b
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!