The correct answer is option D
The viruses lack the ability to reproduce without a host cell. This is the reason why the scientist declared that the viruses are considered as non living.
Viruses have genetic material in the form of DNA or RNA that is only used for replication in the host's body.
Viruses cannot survive without the host cell.
Answer:
Explanation:
Positive phototropism is growth toward a light source, and negative phototropism is growth away from a light source. ... Sunflowers are a great example of positive phototropism, because not only do their stems curve toward the light but their flowers turn to face the sunlight as well.
Answer:
<u>1) </u>
=> The tube-like structure is filament.
=> The bag-like structure above is Anther.
=> As a whole, they both are called stamen.
=> The grains inside anther are pollen grains.
<u>2)</u>
a) Stigma
b) Style
c) Ovary
d) Ovule
e) Carpel
<u>Part III)</u>
a) Cross-Pollination
b) Self-Pollination
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Hope this helped!
<h3>~AH1807 </h3>
The ability of a nerve and muscle cell to receive and respond to a stimulus by changing its membrane potential is called Excitability.
<h3>Nerve cell</h3>
- A nerve cell is an electrically excitable cell that communicates with other cells through specialized connections called synapses.
A group of connected neurons is called a neural circuit.
<h3>Muscle cell</h3>
- A muscle cell refers to either a cardiac muscle cell, or a smooth muscle cell as these are both small cells.
Learn more about nerve cell:
brainly.com/question/1558395
