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VARVARA [1.3K]
3 years ago
15

Indicate the period when the vertebrates invade the land

Biology
1 answer:
CaHeK987 [17]3 years ago
7 0
<span>first plant group to successfully invade the land. seedless vascular.. during which period were the seedless vascular plants most abundant.</span>
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HELP ASAP GIVING BRAINLIST HELPP!!!!!}
Evgen [1.6K]

Answer:

clam

Explanation:

puffer fish is the only omnivore present in this diagram. this shows clam is eaten by pufferfish. so the answer is clam

7 0
3 years ago
Cell communication involves a cell detecting and responding to signals from other cells. Receptor molecules play an important ro
Bumek [7]

Explanation:

-the specific binding of a region of the protein to solutes or a substrate

Transmembrane proteins are embedded within the membrane from the extracellular fluid to the cytoplasm, and are sometimes attached to glycoproteins (proteins attached to carbohydrates) which function as cell surface markers or function as receptors.

These include receptor proteins that bind specifically to molecules called lingands; some also use channels which respond to chemical signals by modifying solute-specific regions that aid in regulating ion exchange, through the hydrophobic layer of the plasma membrane.

Learn more about membrane components at brainly.com/question/1971706

Learn more about plasma membrane transport at brainly.com/question/11410881

#LearnWithBrainly

5 0
3 years ago
a) Name the structures that: i) Carry water and mineral salts to the leaf ii) Prevents too much water loss from the upper surfac
const2013 [10]

Answer:

a) i) Xylem

   ii) Upper epidermis  

   iii) Stoma

   iv) Chroloplast  

   v) Palisade cell layer

b) By a waxy layer on the cuticle of the leaf

Explanation:

The plant's leaves have a large surface area that is capable of absorbing sunlight. The plant's waxy layer in the surface of the leaf protects it from the loss of water, as well as of diseases caused by the entry of microorganisms. The palisade cell's surface is a single layer of cells underneath the upper epidermis that is adapted to absorb light energy.

The waxy layer is a primary physical barrier composed of insoluble polymers and lipids whose function is to protect the leaves against the entry of harmful organisms including virus, bacteria and fungus. Moreover, the plant's waxy cuticle is also a barrier that prevents the loss of water and solutes.

3 0
3 years ago
Bone can be classified as a connective tissue because it contains an extracellular matrix that surrounds widely spaced cells. Tr
kotykmax [81]

Answer:

False. Bone can be classified as a connective tissue because it provides support and structure to the body.

Explanation:

Connective tissue is those tissues that fill spaces between organs and other tissues, and also provide support to the organism. It is characterized by the presence of different types of cells separated by intercellular material synthesized by them.

The bony tissue is the principal structural and supportive connective tissue that differs from the other connective tissues because its extracellular matrix is mineralized, which makes it possible to accomplish its support and protection function due to its rigidity and hardness. The mineral that deposits in the osteoid matrix is the calcium phosphate, composing hydroxyapatite crystals. The bony tissue is a storage site of calcium and phosphate, which are available for maintaining constant the calcium blood levels according to the individual physiological needs.

6 0
3 years ago
Please answer this thank you
olga55 [171]

Answer:

16

Explanation:

8 0
3 years ago
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