The reproductive structures used by cycads are called?a. flowers.
b. sporangia.
c. sori.
d. cones.

Answers

Answer 1
Answer: D. Cones
Cycads are basically composed of woody plants which have roots, a stem, leaves and reproductive structures called Cones. These cones differ from each other depending on the plant whether it is female or male. These cones vary from shape, size, color, etc. based on the sex of the plant.

Related Questions

The third step in the scientific method is reviewing the literature.Question 10 options: a. True b. False
A testable hypothesis could be formed from which question
Use your understanding of the phosphorus cycle to answer the questions provided.Phosphorus cycles between living things and the ______. ?
In the human body, only certain cells undergo fertilization. what is another process that only these type of cells undergo?
How can two species share the same habitat without driving the other to extinction?

Brown fat cells produce a protein called thermogenin in their mitochondrial inner membrane. Thermogenin is a channel for facilitated transport of protons across the membrane. What will occur in the brown fat cells when they produce thermogenin? A) ATP synthesis and heat generation will both increase.
B) ATP synthesis will increase, and heat generation will decrease.
C) ATP synthesis will decrease, and heat generation will increase.
D) ATP synthesis and heat generation will both decrease.
E) ATP synthesis and heat generation will stay the same.

Answers

Answer:

C) ATP synthesis will decrease, and heat generation will increase.

Explanation:

The energy for ATPs synthesis in the mitochondria is generated by the  Proton Motive Force (PMF), which pumps protons across the intramembrane ;to set up electrochemical gradient for protons between the matrix and intramemebranes.

The energy generated  with the influx of protons down their electrochemical  gradients into the matrix is used for ATPs synthesis by the enzyme ATPase synthase.

Thermogenin however increases the permeability of inner mitochondria membrane to protons. Therefore the pumped protons in the intramemebranes leaked back into the mitochondria matrix,thus reducing the electrochemical gradient, inhibiting chemiosmosis, and therefore the energy for synthesis of ATPs by ATPase synthase enzyme in oxidation phosphorylation.

Therefore these uncoupling protein reduces the proton gradient meant for ATP synthesis.However because of the ability to generate heat  in the body as  non -shivering  mechanism of  heat generation, thermogenin will increase heat  in the brown fat cells.

Explanation:

B) ATP synthesis will kncrease and heat generation will decrease

___________ is a structure that contains spores and is located on the underside of fern leaves. Basidium Bacillus Cilium Sorus

Answers

Sorus is a structure that contains spores and is located on the underside of fern leaves.

Classify as man-made or natural extinction: Changes in oxygen levels in ocean watera. natural extinction
b. both
c. neither
d. man-made

Answers

Answer:

a

Explanation:

cuz it is the fact of theory

The answer for the question is A.

To maintain order within their cells and organs, all living things musta. constantly change.
b. be able to move.
c. reproduce.
d. carry on metabolism.
e. extract energy from sunlight

Answers

The answer is d. carry on metabolism.

Metabolism includes all chemical reactions involved in maintaining order within cells and organs. The purpose of metabolism is a conversion of food or fuel to building blocks for macromolecules and to energy for cellular processes. It is involved in the elimination of waste, too. Regulation of metabolism is important for normal functioning of cells and organs.

What are three practices proven to be effective in lowering the risk of becoming infected with an STI.

Answers

STIs can be avoided by taking precautions such as not having a physical relationship with someone who has an STI, using a safe and secure procedure, washing properly, and so on. All of these precautions can help keep the STI from spreading.

What is a STI?

It is a sexually transmitted infection that can easily spread from one infected person to another during physical relationship. Some examples include syphillis, which can be passed from one person to another if the person does not maintain proper sanitation and goes to check and consult with doctors before engaging in a physical relationship.

This can be prevented by using a condom, which prevents the spread of such STIs. One should get tested for the STI disease and maintain proper cleanliness in that part of the body. One should not be involved in multiple partners because it increases the chance of being diseased.

Hence, proper preparation and sanitation should be maintained to stop the spread.

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STI or Sexually Transmitted Infection is an infectious disease acquired by getting in sexual contact with an infected person. STIs can be prevented and there are many practices that can lower someone's risk of becoming infected. Here are three practices that have been proven effective:
1. Have yourself tested regularly. Regular assessment and check up is necessary once you become active in sex. This is to ensure that you are not infected since relying on symptoms is useless because it is most of the time asymptomatic. Early detection is also the aim of regular check ups.
2. Protect yourself. Always use condoms and other means of protection when engaging in sex. You will never know if your partner is infected or not.
3. Vaccinations. Vaccinations have been proven in lowering the risk of acquiring diseases. Be informed about the latest vaccines for STIs and have yourself vaccinated. 

Which of the following statements about prescribed burns is true?a. Prescribed burns will always have detrimental effects on ecosystems, but should be used to protecthomesb. Prescribed burns are necessary for preventing natural wildfires.c. Prescribed burns can help maintain healthy ecosystems.d. None of the above

Answers

Prescribed burns can help maintain healthy ecosystems.

Fire is a natural, common process in various ecosystems and is important to preserve a healthy forest and the quality of plant and animal growth. Many plants and animals have not only accommodated to fire but truly depend on it such as the lodge pole pine which requires fire to support in the scattering of its seeds. Naturally occurring fires also support to administer pests and disease under control by eliminating the pathogens contaminating a stand.

Prescribedburns can help maintain healthy ecosystems. The correct option is c.

Prescribedburns, also known as controlled burns or planned fires, are intentionally set fires conducted under specific conditions and managed by trained professionals.

  • Ecosystem Health: Prescribed burns can mimic natural fire cycles and play a crucial role in the maintenance and restoration of certain ecosystems.
  • Fuel Reduction and Risk Mitigation: Prescribed burns can help reduce the accumulation of dead vegetation and fuels, lowering the risk of more severe wildfires.
  • Habitat Management: Prescribedburns can create or maintain specific habitats for certain plant and animal species.
  • Disease and Pest Control: Prescribed burns can help control certain pests, diseases, and invasive species. Some pests and diseases are sensitive to fire and their populations can be reduced or controlled through carefully planned burns.

Thus, the correct option is c.

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