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Alla [95]
3 years ago
13

Which mollusk body part produces the hard shell of clams, snails and oysters?

Biology
2 answers:
Vinvika [58]3 years ago
5 0

Answer:

mantle

Explanation:

Mollusks often have a hard outer shell to protect their bodies. All mollusks have a thin layer of tissue called a mantle which covers their internal organs.

galben [10]3 years ago
5 0
Mantle :)

explanation:
You might be interested in
Multiple Choice
Lesechka [4]

Answer:

decreases a plant’s weight

Explanation:

Aerobic respiration is a process of respiration in which oxygen is required and the byproducts of aerobic respiration are carbon dioxide, water and energy.

Plants undergo aerobic respiration and it is a catabolic process in which complex compounds in plants turns into simpler compounds. This process reduces the dry weight of the plants.

Glycolysis is the first step in both aerobic and anaerobic respiration so it is not a typical aerobic respiration.

Hence, the correct answer is "decreases a plant’s weight".

3 0
3 years ago
What types of organisms will be affected by a decreased supply of water in an ecosystem?
Delvig [45]
"Producers, consumers, and decomposers will be affected" is the one among the following choices given in the question that will be the <span>types of organisms that will be affected by a decreased supply of water in an ecosystem. The correct option among all the options that are given in the question is option "a". </span>
4 0
3 years ago
Read 2 more answers
What are the two models of the Solar System? How are they different?
Juli2301 [7.4K]

Answer:

The geocentric model says that the earth is at the center of the cosmos or universe, and the planets, the sun and the moon, and the stars circles around it. The early heliocentric models consider the sun as the center, and the planets revolve around the sun.

Explanation:

8 0
3 years ago
3. In one population, 18 individuals have long hair and 182 individuals have short hair. It is known thatmating has been random
pishuonlain [190]

Answer: p (short hair) = 0.91 and q (long hair) = 0.09

Explanation: In the population, short hair is a feature of domnant allele, because there are more short haired individuals than with long hair. In genetics, p is the frequency for dominant allele and q is for recessive allele.

For this question, short hair is allele L and long hair is allele l

So, the frequency of short hair is p and of long hair is q.

To calculate the frequencies:

Frequency of allele L = (number of copies of allele L in population) / (total number of L/l gene copies in population)

p = 182/200 = 0.91

The same formula goes for the recessive allele, so:

q = 18/200 = 0.09

Thus, the frequencies of hair allele are 0.91 and 0.09 for short and long, respectively.

8 0
3 years ago
The button-like structure that holds homologous chromosomes together at their middles during cell division is called the
Volgvan

Answer:

CENTROMERE

Explanation:

The CENTROMERE is the primary constriction region where the identical DNA molecules are most tightly bonded to each other during mitosis and meiosis.

The typical chromosome in metaphase is composed of two sister chromatids joined by the centromere.

Surrounding the centromere, we can find the kinetochores. These are laminar proteinic structures forming a plate where the spindle and kinetochore fibers will join during chromatids separation.

The position of the centromere defines the chromosomes as acrocentric, metacentric, or submetacentric.

7 0
2 years ago
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