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djyliett [7]
3 years ago
13

A plant scientist was hired by a greenhouse operator to devise a way to force iris plants to bloom in the short days of winter.

Iris normally blooms as long-day (short-night) plants. Which of the following has the best chance of creating iris blooms in winter?
Biology
1 answer:
Anvisha [2.4K]3 years ago
6 0

Answer:

Interrupt the long winter nights with a brief period of light.

Explanation:

there are some plants that would naturally flower in the winter when there are longer nights. These plants are normally categorized under short-day (long-night) plants. On the other hand, there are other plants categorized as long-day (short-night) plants. These type of plants include lettuce, spinach and several others. They would flower in the late spring when dark periods are usually shorter. When such plants that do well in the early summer are planted during the long winter nights, it will flourish if there long nights are interrupted with a brief period of light. Thus the farmer has a greater chance of forcing the iris plant to bloom by interrupting the long winter nights with a brief period of light.

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You are examining a field of crop plants and notice that many of the leaves have small scattered necrotic spots on them, but non
Thepotemich [5.8K]

Answer:

Avirulent.

Explanation:

VIRULENCE is the ability of a pathogenic organism  to infects the host, leading to damages  or death of the host. The extent of these virulent effect depends on  certain chemical substances ( called Virulence factors) produced during the  pathogenic processes.

The virulence effects  is achieved  due to the ability of the virulent factor to disrupt the entire physiological mechanisms of  the organisms; e,g crop plants; though  suppression of the host immune response, disruptions of the immune mechanisms, colonization of the host DNA structure etc. Therefore the pathogenic effects suppressed the host resistance and spread throughout the host body system.

In this present scenario, the pathogenic effect of the likable bacteria; is not virulent, because

none of the d crop pant is completely diseased.

the nascent intenodes and leaves  are growing to usual size.

Consequently, the physiological and the morphological features of the crop plants are still intact. Thus the infection is AVIRULENT.

8 0
3 years ago
Decrease 120 by 15%
WITCHER [35]

Answer:

its e (102)

Explanation:

3 0
3 years ago
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Green algae are more closely related to plants than they are to kelp.Why is this so?
In-s [12.5K]

Answer: Green Algae are closely related to plants.

Explanation: Green Algae are closely related to plants because of they possess photosynthetic pigments as plants.

Green algae and plants are closely related in that they can manufacture their own food from nutrients and sunlight through the process of photosynthesis

Green algae also possess the same carotenoids and chlorophyll a and b as land plants which make them closely related.

Kelps don't have these characteristics.

6 0
3 years ago
All of the following are important properties of prokaryotes except
kenny6666 [7]

Answer: C) Prokaryotes convert nitrogen-containing molecules into forms that can't be used by other organisms.

Prokaryotes are the organisms that do not have a membrane bound nucleus, mitochondria and other organelle. They ranges in size of diameter from 0.1–5.0 µm.

Example:<em> Escherichia coli, Sulfolobus acidocaldarius archeobacterium </em>

Decomposers, play an important role in nitrogen cycle. Nitrogen gas is converted to nitrate compound by nitrogen fixing bacteria which are present in root nodules of leguminous plants.

Example: <em>Azotobacter </em>

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2 years ago
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ale4655 [162]
I think the answer is C
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2 years ago
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