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algol [13]
3 years ago
5

Why do animal cells not need central vacuoles?

Biology
1 answer:
Keith_Richards [23]3 years ago
3 0

Answer:

B:animal cells have cell walls

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Describe three traits that might be desired in dogs?
liberstina [14]

Answer:

Milk bones, bacon dog treats, and Dingo

Explanation:

5 0
3 years ago
Which two characteristics of living things do viruses exhibit?
LuckyWell [14K]

Answer:

Viruses exhibit two out of above mentioned which are

1. They contain genetic information

2. They reproduce

Explanation:

Viruses can be classified as either living or non living organisms

They can be classified as living organisms because of the following reasons

1. They can mutate

2. They can grow

3. They evolve to adapt to their hosts

4. They are capable of multiplication in their host cells

5. They are made up of proteins and glycoproteins like cells do

6. They have genetic information which helps them to produce more viruses in the form of either RNA or DNA.

They can also be classified as non living organisms because

1. They can not exist outside their host cell

2. They do not carry out metabolism, they make use of their host mechanisms

8 0
3 years ago
Did the addition of rooting compound make any difference in the time it took to develop roots? Did it make any difference in the
harkovskaia [24]

Answer:

In in vitro plant tissue culture, indolbutyric acid and other auxins are used to initiate root formation in a procedure called micropropagation. The micropropagation of plants is an asexual propagation or propagation technique that is based on the organogenetic potential of plant cells, which consists of cultivating in vitro on appropriate substrates, isolated cells, portions of yolk meristems, vegetative apices at the beginning of their development or microstaquillas. Small samples of plants used are called explants. Auxins such as indolbutyric acid can be used to cause mass formation of undifferentiated cells called corns. Callus formation is often used as a first step in the micropropagation process since, by exposure to certain auxin hormones, callus cells can be induced to form other tissues such as roots.

Indolbutyric acid is often used to promote the rooting of stakes. In a study in Camellia sinensis, the effect of three different auxins, indolbutyric acid, indolacetic acid and 1-naphthalenacetic acid on root formation was measured. According to the authors, indolbutyric acid produced a higher root yield compared to other auxins.9 This effect of indolbutyric acid is consistent with that found in other studies; This hormone is considered the most commonly used auxin for root formation, 10 because it is much more potent than indolacetic acid and other synthetic auxins.7

Jatropha curcas is a species in which there is an improvement in the quality of the rooting of the stakes with the addition of indolbutyric acid in the middle (longer root length, number of roots, percentage of rooted stakes, and dry root weight) , 11 although not always the effect on rooting is statistically significant.

7 0
4 years ago
construct a dichotomous key which can be used to identify the five antelopes shown in figure 1.1 use only visible features.​
Bas_tet [7]

The dichotomous key used to identify the antelopes might be based on the presence/absence of certain muscles, weight, etc.

<h3>What is a dichotomous key?</h3>

A dichotomous key is a system to classify species and/or taxonomic groups by using two different choices.

For example, the presence/absence of certain physical features can be used to identify the antelopes.

Moreover, the threshold in certain features such as weight/height can also be used to classify species.

Learn more about dichotomous keys here:

brainly.com/question/10606660

3 0
2 years ago
The snowshoe rabbit has unusually large hind feet. This adaptation helps the snowshoe rabbit A) move quickly. B) fight off preda
pav-90 [236]

Answer: <u>Option C, stay on the top of the snow </u>

Explanation: Animals have physical features which help them survive in their habitats, protect them from predators and even face adverse weather conditions. Some adaptations are according to the easy movement of the animals. For example- snowshoe rabbits have bigger feet so that they can jump on the top of the snow without digging into it.

6 0
3 years ago
Read 2 more answers
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