Gymnosperms, or seed-bearing plants, were the only abundant form of plant life during the Mesozoic Era.

Answers

Answer 1
Answer: This is false because they weren't the only abundant form of plant life during the Mesozoic Era. There were numerous different types of plants that also used spores or didn't use seeds at all, which points out that this is incorrect. Reptiles fed on them so there was a lot of variety.
Answer 2
Answer: Spore plants were becoming very commom\n.

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Which of the reproductive isolating mechanisms given below is postzygotic?A(Hybrids form but are sterile.
B(The mating season is different.
C(Flowers are pollinated by different insects.

Answers

A postzygotic reproductive barrier is a mechanism that reduces the viability or reproductive capacity of hybrid offspring. So it would be a hybrids form but a sterile.

Answer:

A

Explanation:

As new seafloor is formed, a series of high spots and depressions is formed on each side of the growing seafloor area. what is the name for the high spots

Answers

The answer is Mid-Ocean Ridge.

The high spots in the newly formed seafloor are called Mid-Ocean Ridge. It refers to the series of high spots and depression which are formed on each side of the growing seafloor area. In short, it is an underwater mountain system formed by plate tectonics. It typically have valleys known as rift.

What do all organisms need to survive? A energy B blood C carbon dioxide D soil

Answers

the answer is A because with out energy the organisms would not be able to function properly 

Final answer:

All organisms need energy to survive. It enables them to carry out vital functions like growth, movement, reproduction, etc. This energy often comes from food or sunlight, depending on the specific organism.

Explanation:

All organisms, from the simplest microorganisms to the most complex creatures, require energy to survive. Energy, option A, is necessary for all life forms as it powers their systems and enables them to perform necessary functions such as growth, movement, reproduction, and responses to their environment. This energy primarily comes from food in animals and sunlight in plants, the latter converting it into chemical energy via a process called photosynthesis. So, it is not blood, carbon dioxide, or soil that all organisms need but energy.

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Which kingdom is known to contain organisms that have cells with no cell walls? Animalia Protista Archaebacteria Eubacteria

Answers

Animalia. This is the animal kingdom, and animals do not have cell walls, only cell membranes. All other mentioned kingdoms do or might have cell walls. The lack of cell walls in animals is one of the characteristics that distinguishes which kingdom an organism belongs to.

Answer:

Animilia

Explanation:

What carbohydrates provide short-term energy storage?

Answers

Monosaccharide and disaccharide

Final answer:

Glucose and glycogen are carbohydrates that provide short-term energy storage.

Explanation:

The carbohydrates that provide short-term energy storage are glucose and glycogen. Glucose is a simple sugar that is readily available in the bloodstream and can be used for immediate energy. Glycogen is a complex carbohydrate that is stored in the liver and muscles and can be broken down into glucose when needed for energy.




  1. Glucose: Glucose is the primary source of energy for the body and is used by cells to produce ATP, the molecule that fuels cellular processes.

  2. Glycogen: Glycogen serves as a storage form of glucose in the body. When blood glucose levels are low, glycogen is broken down into glucose to maintain blood sugar levels and provide energy.

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Some plants have leaves that are poisonous to some animals. Which kind of adaptation is this? (1 point)Survival
reproduction
respiration
defense​

Answers

Defense is mechanism of adaptation by which some plants have leaves that are poisonous to some animals.

Poisonous plants are those herbs, flowers, shrubs or fruits that are toxic enough to harm the body of people as well as dogs, cats and other animals.

The defense mechanisms that plants have developed are very varied and among them are physical adaptations such as thorns or the synthesis of chemical substances that can inhibit consumption by predators and some with antimicrobial effects.

During the evolutionary process, all organisms have been attacked by viruses, bacteria and fungi; likewise, they are consumed as a source of nutrients by different herbivorous animals and vertebrates.

In response to external factors that limit the normal development of plants, they have developed various defense mechanisms ranging from anatomical adaptations to chemical defense.

The chemical substances produced by plants as defense, are very varied, have different functions, inhibit the action of pathogens and prevent their attack, others cause negative effects at different levels, such as irritation on contact, nausea or gastric disorders.

Some of these compounds are saponins, phenolic compounds that include phenolic acids, and complex polymers such as tannins and lignin have the ability to cause pharmacological and toxicological effects in animals.

Therefore, we can conclude that plants have developed various defense mechanisms as chemical defense by which some plants have leaves that are poisonous to some animals.

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Answer:

this is for defence

Explanation: