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Dafna1 [17]
3 years ago
13

Two species of a plant genus Ipomea share a common niche and reproductive pattern but are still unable to hybridize because they

have structurally different flowers. What kind of reproductive isolation is observed in these two species?
A.) Mechanical
B.) Temporal
C.) Behavioral
Biology
2 answers:
Natalija [7]3 years ago
8 0
"Mechanical" would be the kind of reproductive isolation among the choices given in the question that has been observed in these two species. The correct option among all the options that are given in the question is the first option or option "A". I hope that the answer has come to your help.
Tanzania [10]3 years ago
6 0

Answer:

The correct answer would be A) mechanical.

Mechanical reproductive isolation is a type of reproductive isolation in which morphological changes prevent successful mating or pollination.

Difference in structure or complementary nature of genitalia prevent the successful mating.

In plants, difference in structure of flower prevents the successful pollination.

In addition, plants achieve mechanical reproductive isolation by attracting different type of pollinators due to which pollination does not occur between different species.

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1. Describe the movements of transverse adduction and flexion for the pectoralis major and biceps brachii muscles.
Cerrena [4.2K]

Answer and Explanation:

The pectorals major is an enormous, fan-formed muscle covering the chest. It is included clavicular and sternocostal areas. Adducts and turns the upper arm. Transverse adduction and flexion of the pectoralis major is smooth movement. You can see the muscles extending far and contracting back effectively.  

The biceps brachii is a two-headed muscle. Despite the fact that most of the bulk is found anteriorly to the humerus, it has no connection deep down itself. The activity is Supination of the lower arm. It likewise flexes the arm at the elbow and at the shoulder. In the biceps brachil there isn't a lot of expansion found in the muscle contrasted with the pectoralis major.

6 0
3 years ago
Nadph is essential for fatty acid synthesis and can be generated by which two enzymes?
sashaice [31]

The two enzymes that help in the generation of NADPH which is essential for fatty acid synthesis are the Glucose-6-phosphate-dehydrogenase(G6PDH) and the Malic enzyme.

NADPH is predominantly produced by the pentose phosphate pathway, either directly by the malic enzyme as it oxidized malate to pyruvate or indirectly through the glucose-6-phosphate dehydrogenase.

NADP+ is used to make NADPH. The pentose phosphate pathway, which is catalyzed in the first stage by glucose-6-phosphate dehydrogenase (G6PDH), is the main source of NADPH in mammals and other non-photosynthetic organisms.

From glucose, the pentose phosphate pathway also generates pentose, a crucial component of NAD(P)H.

However, the Entner-Doudoroff route is also used by some bacteria, and NADPH generation is unaffected.

Learn more about NADPH here brainly.com/question/14870384

#SPJ4

6 0
2 years ago
The ___ reaction of photosynthesis puts carbon dioxide into the form of carbohydrates. light or dark
Aliun [14]
Dark Stage.

At the light stage, sunlight is absorbed by the chlorophyll to be converted into Chemical energy.
Water will be broken down into H+ ions and OH- ions in the presence of light.

At dark stage, sugars are synthesised from carbon dioxide.
8 0
3 years ago
Read 2 more answers
HELP PLEASE I HAVE A WEEK LEFT OF SCHOOL I DONT WANNA FAIL
Oksana_A [137]

Answer:

I am too lazy to do this, but I am assuming you were supposed to do this in class. I will give you ideas.

Why is soil important?  Soil is our life support system. Soils provide anchorage for roots, hold water and nutrients. Soils are home to myriad micro-organisms that fix nitrogen and decompose organic matter, and armies of microscopic animals as well as earthworms and termites.

What is soil erosion?  Soil erosion is a naturally occurring process that affects all landforms. In agriculture, soil erosion refers to the wearing away of a field's topsoil by the natural physical forces of water (Figure 1) and wind (Figure 2) or through forces associated with farming activities such as tillage.

what human activities are responsible for soil erosion happening at advance rates?     Ploughing, unsuitable agricultural practices, combined with deforestation and overgrazing, are the main causes of human-induced soil erosion

What are some effects on soil loss?  The effects of soil erosion go beyond the loss of fertile land. It has led to increased pollution and sedimentation in streams and rivers, clogging these waterways and causing declines in fish and other species. And degraded lands are also often less able to hold onto water, which can worsen flooding.

What can be done to prevent soil erosion?   Maintaining a healthy, perennial plant cover.

Mulching.

Planting a cover crop – such as winter rye in vegetable gardens. ...

Placing crushed stone, wood chips, and other similar materials in heavily used areas where vegetation is hard to establish and maintain.

Explanation:  Hope this helps and have a great day

3 0
3 years ago
The Great Pacific Garbage Patch will be difficult to physically clean up because _______.
rewona [7]
Hello

The answer is : D

I hope that's help!
7 0
3 years ago
Read 2 more answers
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