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2 years ago

A. Unlike true jellies, this class is equipped with as many as two dozen "true" eyes paired around

Biology

1 answer:

Harrizon [31]2 years ago

8 0

Answer:

Cubozoans or the box jellies

Explanation:

These cubozoan or the box jellies is the second class of cnidaria comprising the classic jellyfish. The first class are the Scyphozoans, or "true jellies. The box jellies have as many as two dozen eyes that are not primitive, light-sensing patches of cells but are true eyeballs that are made up of lenses, retinas and corneas. These eyes are paired around the circumference of their bells giving them a 360-degree range of vision. They function in detection of prey and predator and also mainly to maintain the box jelly orientation in water.

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Given the following cross TtYyRr x TtyyRr (T = tall; t = short Y = yellow; y = green R = round; r = wrinkled), what proportion o

mihalych1998 [28]

Answer:

3/32 ttyyR-

Explanation:

Cross: Tall, Yellow, Rounded individuals with a tall, green, rounded individual

Parentals) TtYyRr x TtyyRr

Gametes) TYR, TyR, TYr, Tyr, tYR, tyR, tYr, tyr (Parent one)

TyR, TyR, Tyr, Tyr, tyR, tyR, tyr, tyr (Parent two)

We need to know what proportion of offspring is expected to be short plants with round, green seeds. So we need to identify the gametes for these traits. The genotypes are:

Shot → tt
Round → RR or Rr
Green → yy

⇒ Parent one can provide gametes tyR and tyr

⇒ Parent two can provide gametes tyR and tyr

(1/8 tyR x 2/8 tyR) + (1/8 tyR x 2/8 tyr) + (1/8 tyr x 2/8 tyR) =

2/64 ttyyRR + 2/64 ttyyRr + 2/64 ttyyRr =

1/32 ttyyRR + 2/32 ttyyRr =

3/32 ttyyR-

4 0

3 years ago

What refrigerant safety group classification has the highest flammability and the highest toxicity?

timama [110]

Answer;

-B3

Explanation;

Refrigerants are divided into two groups according to toxicity:

-Class A signifies refrigerants for which toxicity has not been identified at concentrations less than or equal to 400 ppm; and

-Class B signifies refrigerants for which there is evidence of toxicity at concentrations below 400 ppm.

They are also divided into three groups according to flammability:

-Class 1 indicates refrigerants that do not show flame propagation when tested in air at 21°C and 101 kPa;

-Class 2 indicates refrigerants having a lower flammability limit of more than 0.10 kg/m3 at 21°C and 101 kPa and a heat of combustion of less than 19 kJ/kg;

-Class 3 indicates refrigerants that are highly flammable as defined by a lower flammability limit of less than or equal to 0.10 kg/m3 at 21°C and 101 kPa or a heat of combustion greater than or equal to 19 kJ/kg.

-Therefore; the answer for the above question would be Class B and class 3.

3 0

3 years ago

Read 2 more answers

Over time, one group of squirrels becomes separated from another group. Due to erosion and the subsequent formation of a river,

weeeeeb [17]

<span>4. Species

</span><span>Allopatric speciation is were a single species has been separated so long they have both evolved slightly in different "directions" that prevent them from breeding after being reintroduced.</span>

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3 years ago

A person with a blood pressure of 134/82 mmhg would have a pulse pressure of

leonid [27]

A person who exhibits a blood pressure of 134/82 mmhg would likely have a pulse pressure of beats/min ranging from sixty to seventy beats per minute in which a person would likely receive as a pulse pressure when he or she has a bp of 135/82 mmhg

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3 years ago

Define 3 of the major parts of the skeletal system and list the

anygoal [31]

Answer:

Bone

The major functions of the bones are body support, facilitation of movement, protection of internal organs, storage of minerals and fat, and hematopoiesis. Together, the muscular system and skeletal system are known as the musculoskeletal system.

Ligament

Ligaments connect the ends of bones together in order to form a joint. They also assist in holding organs in place. Tendon: A tough, flexible and inelastic band of fibrous connective tissue that connects muscles to bones.

Tendon

A tendon is a fibrous connective tissue which attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball. A tendon serves to move the bone or structure.

Cartilage

Cartilage: This smooth and flexible substance covers the tips of your bones where they meet. It enables bones to move without friction (rubbing against each other). When cartilage wears away, as in arthritis, it can be painful and cause movement problems.

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2 years ago