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vova2212 [387]
3 years ago
12

3. In the Phylum Porifera, the highest level of organization is arguably only at the cellular' levél. How

Biology
1 answer:
SIZIF [17.4K]3 years ago
8 0

Cnidarians have become more complex in terms of organisation than the poriferan as they have developed a tissue level organisation,they show locomotion , exhibit polymorphism  and a radial symmetry.

This means that cnidarians evolved later than poriferans and are adapted to more competitive and complex environment.

Explanation:

  • Poriferans are pore bearing animals , they have cell specialization but no tissue level organisation while cnidarians are diploblastic and exhibit tissue level organisation.
  • Poriferans are asymmetrical organisms hence are primitive to the radially symmetrical cnidarians.
  • poriferans obtain nutrition mostly through filter feed while cnidarians have a gastro vascular cavity for digestion.
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The _____ bisects the body into right and left sides.
alexandr1967 [171]

Answer: sagittal plane

Explanation: sagittal plane is one of the body planes,the others are coronal and transverse.

The sagittal plane divides the body into left and right portions.

Dividing the body into plans is important in the study of anatomy as it helps in precision of the part of the body under consideration and it prevents errors.

3 0
3 years ago
Are gender traits completely a result of societal expectations? Justify your answer.​
ExtremeBDS [4]

Answer:

No. Gender traits in humans are largely determined by biophysical processes.

Explanation:

There seems to be a vocal political faction that is trying to convince people in the name of liberty and equality that gender traits are completely learned, and therefore arbitrary. But this claim disagrees with scientific evidence. In general, boys play more with cars and girls play more with dolls not because their parents are perpetuating outdated gender stereotypes, but because their brain is telling them to. This fact does not mean that boys have to play with boy toys, or that boys who play with dolls aren't really boys. It is just a scientific observation about average behavior and its link to fetal development.

8 0
3 years ago
If you've just completed a long hike, marathon, bicycle ride or other extended form of high-intensity exercise, you could experi
fenix001 [56]

Answer:

(c) 16-24 calories

Explanation:

In the  question it is provided that 4 - 6g of  highly concentrated glucose product helps to get on the feet within 20 to 30 minutes.

Also we know that 1 gram of glucose contains 4 calories.

Therefore,

4g of glucose = 4 × 4 calorie

                       = 16 calories

6g of glucose = 6 × 4 calorie

                       = 24 calories

Thus, we can say that the minimum number of calories needed to bounce back after the workout is 16 - 24 calories

Hence, the correct answer is option (c) 16-24 calories

5 0
3 years ago
Where does the light and thermal energy given off when burns food come from?
yawa3891 [41]

Answer: B

Explanation: Because Light and thermal are two different things of heat and if one of the cores of heat gets any cooler than it is than it may burn out and there wwill no longer be heat so the food brin come in at the middle (Core) of the heat and just like a microwave it had different heats but its core of the heat stays the excact same

5 0
3 years ago
Which of the following best describes an effective adaptation of plants commonly found in the rain forest?
Montano1993 [528]
Plants in the rain forest have unique adaptations to help them to thrive in the climatic conditions present there. Temperatures in the rain forest are high all year round. Since tropical rain forests are located around the equator they receive direct sunlight. The leaves of the plants here are waxy to protect them from the direct sunlight. 
Rain fall is high here and it can get up to 4000 mm per year. Leaves are equipped with drip tips to allow for the easy run off of water after a down pour.
The barks of most trees are also smooth to further facilitate the movement of water to the ground. The trees in the forest grow fast and compete with each other for sunlight. The trees grow very tall and very fast so they have specialized roots called buttress roots that can support them. These roots spread out to support tall trees. 
The dense vegetation of the forest prevents much plants from growing under the canopy of the trees. A small number of plant however can survive in this low light environment. The plant that grow under the canopy have large, dark green leaves to make use of the little light that passes through. 

8 0
3 years ago
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