4. The top part A of the flask-shaped reproductive organ X in the flower of a plant secretes a surgery substance
into its lower part B which goes towards the bottom part of the flask-shaped organ. When a tiny grain D
coming from the top part E of another reproductive organ Y in the flower falls on part A, it grows a long
tube F through the organ X in response to the sugary substance and reaches the bottom part C of flask-
shaped organ to carry out fertilisation.
(a) What is (i) organ X, and (ii) organ Y, inside the flower ?
(b) Name parts (1) A (ii) B, and (iii) C, of flask-shaped organ.
(c) Name (i) grain D, and (ii) part E of organ Y.
(d) Name the tube F.
(e) What is the phenomenon of growing a long tube in response to a sugary substance in the process of
fertilisation in a flower known as ?
Answer:
X- pistil
Y- stamen
A-stigma
B-style
C-ovary
D- pollen grain
E- anther
F- pollen tube
What are the roles of different organelles in a cell?
Answer:
Functions of different cell organelles:
Nucleus: contains all the genetic material, acts as information center and tells all the organelles what to do, RNA transcription.
Mitochondria: generates energy through respiration
Endoplasmic recticulum (rough): transport and storage of material; (smooth ER): creation of lipids and fats
Ribosome: protein creation by RNA translation
Golgi apparatus: responsible for synthesis, packing and processing of proteins
Chloroplast: responsible for glucose creation (by photosynthesis)
Cytoplasm: is region where all chemical reactions take place and is the jelly like fluid that holds all the organelles in place inside of the cell
lysosome: responsible for breakdown of larger molecules
Flagellum (or flagella): tail like organelle, assists motion
Vacuole: helps in maintenance of homeostasis and stores waste products or other materials like water / food
cell membrane: separates cell from the rest of the environment and controls what comes in and out of the cell
cytoskeleton: supports cell structure
There are a number of other organelles as well but i just named some of the common ones.
Answer:
the cell sturcture
Explanation:
If bacteria do not contain a nucleus will bacteria still have DNA?
Of course not the DNA is found in two basic forms: a chromosomal loop and ring-like plasmids. The chromosomal loop is literally a looping string of DNA. Since there is no true nucleus in a prokaryotic cell, the DNA is suspended in cytoplasm, or the fluid filling the cell.
Which statement is false?
O Polypeptides are made of amino acids.
O Lipids are made of fatty acids.
O Simple sugars are made of polysaccharides.
O Nucleic acids are made of nucleotides.
Which of the following results in folded mountains
Answer:
Fold mountain are created where two or more of Earth tectonic plates are pushed together .
Explanation:
I hope this will help you
Sometimes after an intense exercise routine, an individual will have sore muscles 1 to 2 days following the exercise; this is called delayed onset muscle soreness. Although not completely understood, it is believed that one cause of this is damage that occurs to the Z disks and contractile filaments in the muscles. When the body attempts to repair this damage, an inflammatory response occurs that causes soreness a couple of days after the exercise has taken place. Which of these situations would likely lead to less delayed onset muscle soreness in an individual?
a. a mutation in the Z-disk protein that caused the attachment of the Z disk to the titin protein to be stronger
b. a mutation that would reduce the amount of lactic acid buildup in muscle tissue
c. a mutation in the Z-disk protein that caused the attachment of the Z disk to the titin protein to be weaker
d. a mutation that weakens the calcium binding ability of troponin
Answer:
The correct answer is option A. a mutation in the Z-disk protein that caused the attachment of the Z disk to the titin protein to be stronger
Explanation:
As delayed onset muscle soreness is thought to be led by the inflammatory response of the body in order to repair damage to the Z disks and contractile filaments in muscles, due to the intense exercise.
Mutation in the Z-disk protein would strengthen the connection between Z disks and contractile filaments as it is logical that this mutation could withstand more pressure or intense exercise before damage occurs to these tissues.
Dating the fossil at the site it was found, without benefit of laboratory equipment, would BEST be described as
A) carbon dating.
B) imprint dating.
C) relative dating.
D) half-life dating.
Answer:
Answer c) Relative Dating.
A red blood cell is placed in a salty solution. When it shrivets due to loss of water, we say it has
•become turgid
•plasmolyzed
•lysed
•crenated
Answer:
It's crenated ( I asked Google btw)
pleasseeee help...........
Answer:
The theory of plate tectonics states that the Earth's solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet. It was proposed by Alfred Wegener.
Explanation:
Besides plants and insects, what else would the student need in the ecosystem? Why?
Chrysanthemum pests and diseases include leaf miners, _____, powdery mildew and leaf spot
Answer:
aphids
Explanation:
it just is trust me
I will mark brainlisest just please HELPPPPPPP
Prompt
What is the difference between a niche and a habitat?
What is meant by the concept of development?
Answer:
A process that creates growth, progress, positive change or the addition of physical, economic, environmental, social and demographic components.
Does a parrot eat a grasshopper?
To kill a fungus, you could use a fungi-_______
Answer:
antivirus
Explanation:
Plz ASAP What is the male sex cell that results from meiosis?
zygote
sperm
egg
bacteria
Answer:
sperm
Explanation:
Answer:
b. sperm
Explanation: it is what fertilizes the egg (female meiosis cell) to create a zygote.
E2020
In the food web below what organisms does organism A eat
Answer:
hop this hepl
Explanation:
is kissingg the homies gae
Answer:
no
Explanation:
only if y’all have socks on
ASAP Which level of organization is directly below organ system
A:organelle
B:Cell
C:Tissue
D:organ
Answer:
Here since the person above wants to be 3 years old, lemme try to help you, the answer will be D. Organ
Explanation:
saturn and Uranus are alike in that they
Answer:
The correct answer is they both have rings around them
Explanation:
Saturn and Uranus are both planets in our solar system; indeed Saturn is the sixth planet while Uranus is the seventh planet. Besides this, Saturn and Uranus are giant planets, this means they are composed of gas or similar materials and they are massive. Moreover, as giant planets these two planets have a ring system, which means around them, there are dust and other particles that orbit the planet and form rings; although, in the case of Saturn these are massive and more visible. According to this, Saturn and Uranus are alike because they both have rings around them.
Answer:
They both have rings around them.
Explanation:
The only 4 planets in our solar system that are gas giants have rings.
Which of these are NOT found in plant cells?
a)cell membranes
b)centrioles
c)mitochondria
d)cell walls
Answer:
B. centrioles
Explanation:
Plant cells have cell walls, cell membranes and also contain mitochondria along the chloroplasts.
which of the following are Vertebrates?
Worms
Answer:
a vertebrate is an animal with spinal cord surrounded by cartilage or bone
Explanation:
fishes,whales,sharks
amphibians
reptiles
birds
mammals
(ANSWER NEED RIGHT AWAY!! PLS) A classmate claims that an apple and cupcake, both about the same size, give you the same amount of energy. Do you agree or disagree with this
statement? Explain.
Answer:
No, just because something is the same size doesn't mean it will have the same amount of energy. One thing can have more positive electrons and make it have more energy than the other.
A local ecosystem includes a variety of grasses that grow on spongy soil. In spring, heavy rainfall and melted snow cover the soil in a few inches
of water. The ecosystem dries up by late summer. What term BEST describes this ecosystem?
A. pond
B. estuary
C. wetland
D. stream bed
Answer:
The correct answer is C. Wetland.
Explanation:
A wetland is a generic name for habitats located between hard ground and open water. Wetlands include, for example, wet and waterlogged shallow land, shallow lakes and seas, marshes, floodplain forests, and flowing waters.
Wetlands provide a breeding ground for many animal and plant species and can act as a buffer in flood areas and prevent severe and sudden floods. Rainfall, waters entering the catchment area, soil and ground elevation differences in the area, and water evaporation form the hydrological conditions of the wetlands. Wetlands are one of the most valuable and endangered habitats on Earth. Swamps, overgrown lakes, flood-prone areas, shallow bays, water-covered beach areas and mangrove beaches are all endangered habitats.
Match each terms with their definitions
Hormones are proteins that regulate many functions in the body, such as growth and cell differentiation. Which of the following does NOT describe a function of proteins in living organisms?
Answer Options:
Proteins store energy long term, provide lubrication, and insulate the body Proteins in the form of enzymes catalyze chemical reactions Proteins provide structures in the body, such as hair and muscles Proteins in the cell membrane help transport substances into and out of cellsAnswer:
Proteins store energy long term, provide lubrication, and insulate the bodyExplanation:
Proteins store energy long term, provide lubrication, and insulate the body - this is false, this describes the role of fats. Proteins in the form of enzymes catalyze chemical reactions - this is true, enzymes are an important class of proteins in the bodyProteins provide structures in the body, such as hair and muscles - this is true, for example our hair is made of a protein called keratin Proteins in the cell membrane help transport substances into and out of cells - this is true, proteins form important pumps and channels in the cell membraneThe elements carbon, hydrogen, oxygen, and nitrogen make up which percentage of the
human body?
O 50%
O 69%
78%
O 96%
Question 6
4 pts
- Making more cells is needed for growth, development, and _______
repair.
Answer:
cell
Explanation:
what satellites are used to study expanses of the oceans surface
Answer:
The Geostationary Operational Environmental Satellite-16 (GOES-16) is the first of NOAA's next generation of geostationary weather satellites. Among the many missions of this satellite, it will collect ocean and climate data.
Explanation:
Using satellites, NOAA researchers closely study the ocean. Information gathered by satellites can tell us about ocean bathymetry, sea surface temperature, ocean color, coral reefs, and sea and lake ice. Scientists also use data collection systems on satellites to relay signals from transmitters on the ground to researchers in the field—used in applications such as measuring tidal heights and the migration of whales. Transmitters on satellites also relay position information from emergency beacons to help save lives when people are in distress on boats, airplanes, or in remote areas.
Answer:
A b c d?
Explanation: