Hardwoods come from what kind of trees?

Consider the classifications of bone, and examples of each. which classification applies to bones used primarily for movement ra

-BARSIC- [3]

Long bones are used primarily for movement rather than protection. A few examples of long bones are the humerus, tibia, and phalangeal bones.

The four principal types of bones are long, short, flat and irregular. Bones that are longer than they are wide are called long bones. They consist of a long shaft with two bulky ends or extremities. Osteoblasts are cells responsible for the secretion and deposition of bone morphogenetic proteins (BMPs) into the extracellular matrix during bone formation.

Appositional growth is the increase in the diameter of bones by the addition of bone tissue at the surface of bones. Bone remodeling involves the processes of bone deposition by osteoblasts and bone resorption by osteoclasts.

To learn more about Long bones , here

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5 0

2 years ago

Explain the Three position of Meristematic tissues

son4ous [18]

<h2>Answer:</h2>

There are three types of meristems on the basis of position, i.e

Apical meristem.
Lateral meristem.
Intercalary meristem.

<h2>Explanation:</h2>

A meristem is the tissue present in most plants containing undifferentiated cells, found in zones of the plant where growth can take place. Generally differentiated cells(the cells other than meristems) do not divide and produce of a different type of cells.

Meristems are classified on the basis of their location in the plant:

Apical meristem - these are the meristems located at root and shoot tips of the plant.
Lateral meristem - these are the meristems located in the vascular and cork cambia in plants.
Intercalary meristems - these are the meristems located at internodes, or stem regions between the places at which leaves attach, and leaf bases.

Result: There are 3 types of meristems.

8 0

3 years ago

Conduct a dihybrid cross of pea plants with the following combination of traits: Parent 1—Tall plant with white flowers (pure br

Angelina_Jolie [31]

Answer:

i) Genotype of Parent 1= TTpp

Genotype of Parent 2= ttPP

ii) The genotypes of their gametes

Parent 1= Tp

Parent 2= tP

iii) F1 generation = All TtPp (tall and purple flower)

iv) F2 phenotype ratio= 9 tall, purple: 3 tall, white: 3 dwarf, purple : 1 dwarf, white.

F2 Genotype ratio= 1:2:1:2:4:2:1:2:1

Explanation:

Let's assume that allele "T" gives tall plants while allele "t" imparts dwarfism. Likewise, the dominant allele "P" is responsible for purple flowers while recessive allele "p" gives white flowers.

i) Genotype of Parent 1—Tall plant with white flowers (pure breeding)= TTpp

Genotype of Parent 2—Dwarf plant with purple flowers (pure breeding)= ttPP

ii) The genotypes of their gametes

Parent 1= Tp

Parent 2= tP

iii) F1 generation = All TtPp (tall and purple flower)

iv) Each of the F1 plant with TtPp genotype will form four types of gametes= TP, Tp, tP and tP

A cross between TtPp x TtPp gives F2 progeny in following ratio=

F2 generation phenotype ratio= 9 tall, purple: 3 tall, white: 3 dwarf, purple : 1 dwarf, white.

Genotype ratio= 1:2:1:2:4:2:1:2:1

5 0

3 years ago

Which organelles do scientists believe originated by symbiotic relationships between primitive eukaryotes and certain prokaryote

AnnyKZ [126]

The organelles that scientists believed that it originated by symbiotic relationships between primitive eukaryotes and certain prokaryotes is known as chloroplast. Chloroplast contain chlorophyll which capture energy from sunlight that is used in photosynthesis .This energy is converted to ATP and NADPH

7 0

3 years ago

7)

GrogVix [38]

Answer:

C) DNA or RNA

Explanation:

Genetic material is found in both viruses and in living single-celled organisms, such as protozoans and bacteria.

8 0

3 years ago