1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vitfil [10]
3 years ago
12

Which of the following is true of conifers? A) The sporophytes grow directly from the gametophyte. B) The gametophytes grow dire

ctly from the sporophyte. C) The spores release from the male cones. D) The spores release from the gametophyte .
Biology
2 answers:
Tresset [83]3 years ago
8 0
Answer - B
Conifers are seed plants and the spores are not released from the male cones, instead the gametophytes grow directly from the sporophyte.
Flauer [41]3 years ago
5 0

Answer:

The correct answer is option B, The gametophytes grow directly from the sporophyte

Explanation:

Conifers are gymnosperm which reproduce through the exposed seeds (seeds not included in fruits) found in the cones. The trees or plant on which these conifers grow are called sporophytes. In the sporophyte, the male and female gametes fuse together to form zygote which further develops into a seed. At the right time, these seeds get dispersed into wind and they grow into new plants known as sporophytes.  

You might be interested in
Help me please !!!!!!!!!
Maru [420]

Answer:

C Biology

even though the correct answer is ecology, ecology is a branch of Biology

Explanation:

3 0
3 years ago
When a person is exercising the body needs to deliver increased amounts of oxygen to the muscles. Which componentes f the blood
ad-work [718]

In human blood, there is a compound inside the RBCs called haemoglobin which ensures that the muscle will receive enough oxygen during exercise.

<h3><u>Explanation:</u></h3>

In human blood, the red blood corpuscles contain the haemoglobin. Haemoglobin is a iron chelated compound containing porphyrin ring and a globin tail which can establish co-ordinate covalent bond with both oxygen and carbon dioxide. The bonding element depends on the concentration of these two gases. In lungs, where the oxygen concentration is more than carbon dioxide, the haemoglobin bonds with oxygen and brings it to the tissues where carbon dioxide concentration is more. This makes the haemoglobin to release oxygen and bond with carbon dioxide which is brought back to lungs. This is the process by which each and every tissue including the muscles recieve oxygen.

In muscles there is Myoglobin which is another iron-porphyrin compound which has several times more affinity for oxygen than haemoglobin. This helps to extract more oxygen from haemoglobin in muscles.

3 0
3 years ago
The current system used for naming organisms was developed by who?
Alja [10]
Carolus Linnæus

<span> Taxonomy, responsible for many scientific classifications and influences in various field of life sciences or biology.  Evidences that Taxonomy uses to group or categorizes species range from </span><span><span>
1.       </span>"Fossil Records</span> <span><span>
2.       </span>Comparative anatomy</span> <span><span>
3.       </span>Comparative embryology</span> 
4.       Biochemical information <span><span>
5.       </span>Cellular structure</span> <span><span>
6.       </span>Behavior</span>" 
<span>We also suggest that taxonomy has played various roles mainly in many aspects in Zoology, Botany, Anatomy and Physiology –aspects that include animal and human structures and functions. As the biotic community is so diverse it is classified to Biodiversity and the existence of properly assorting by set standard.<span> </span></span>

7 0
3 years ago
Assume that the left ventricle of a child's heart has an EDV=90mL, and ESV=60mL, and a cardiac output of 2,400 mL/min. His SV is
Sliva [168]

Answer:

SV = 30 ml/ beat.

HR = 80.

Explanation:

The formula to calculate SV is as follows:

SV = EDV- ESV.

Here EDV = 90ml (end diastolic volume), ESV = 60ml (end systolic volume) ans SV is stroke volume.

SV = 90-60

SV = 30ml/beat.

The formula to calculate HR is as follows:

HR = CO/SV

Here, HR is heart rate, CO is cardiac output = 2,400 ml/min and SV is stroke volume = 30ml/beat

HR = 2,400/30

HR = 80.

Thus, the SV is 30ml/best and HR is 80.

4 0
3 years ago
Where is most glucose absorbed into the blood
Aleksandr-060686 [28]
Absorbed into the blood by the mature enterocytes on the upper third of the intestinal villi
4 0
3 years ago
Other questions:
  • Sara poured some sand into a pan. How could sara best demonstrate wind erosion using this model
    7·2 answers
  • How can mutations in noncoding segments of dna contribute to the development of cancers?
    14·2 answers
  • I need an example of a system in depth
    13·1 answer
  • Compare ponds, lakes, and stream pools.
    6·2 answers
  • Microbial cells are grouped into two major groups based on the separation of their genetic material from the cytoplasm. Which ar
    13·1 answer
  • If all the genes of e. coli were active at once what would happen
    14·2 answers
  • Which of the following best describes the differences between plant and animal cells?
    14·1 answer
  • Which of the following could be a description of the cytoskeleton in a cell? scaffolding water hose drawbridge of jelly
    10·1 answer
  • Causes and Solutions for Water pollution(Grade-7) ​
    9·1 answer
  • How could sedimentary rock become igneous rock? List the steps.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!