Which of the following is a characteristic of an estuary?Group of answer choicesexposed during low tide and submerged during high tidecrashing waves by the shoreemerging of waves and poolsbrackish water Flag question: Question 12Question 121 ptsWhat part of the male reproductive system serves as a passageway for the sperm from the testes to the urethra? Group of answer choicesscrotumpenisseminal vesicleepididymis Flag question: Question 13Question 131 ptsYou observed that the ovary of a wilted flower has become big. What does this show?Group of answer choicesThe ovary is going to break.More ovules are being produced in the ovary.A seed is developing inside the ovary.The ovary is going to drop. Flag question: Question 14Question 141 ptsWhat part of the female reproductive system releases the egg cell and hormones like estrogen?Group of answer choicesvaginafallopian tubecervixovary Flag question: Question 15Question 151 ptsWhich is true about pollination? Group of answer choicesIt occurs when pollen from the filament falls into the stigma of a plant.It is the transfer of pistil from the anther to the stigma of a flower.It is the transfer of pollen grains from the anther to the stigma of a flower.It is the transfer of pollen from the petals of a flower to the sepals of another. Flag question: Question 16Question 161 ptsChicks are hatched from eggs. A goat is born alive and looks like its parents. a frog undergoes many changes as it grows. What do these observations prove?Group of answer choicesDifferent animals reproduce in different ways.Different animals move in different ways.All animals are hatched from eggs.All animals are born alive. Flag question: Question 17Question 171 ptsWhich part of the flower are needed in reproduction?Group of answer choicespollen and antherpistil and stamenreceptacle and pollenpistil and sepals

Question 111 ptsWhich of the following is a characteristic of an estuary?Group of answer choicesexposed during low tide and submerged during high tidecrashing waves by the shoreemerging of waves and poolsbrackish water

You observed that the ovary of a wilted flower has become big. What does this show?Group of answer choicesThe ovary is going to break.More ovules are being produced in the ovary.A seed is developing inside the ovary.The ovary is going to drop. Flag question: Question 14Question 141 ptsWhat part of the female reproductive system releases the egg cell and hormones like estrogen?Group of answer choicesvaginafallopian tubecervixovary Flag question: Question 15Question 151 ptsWhich is true about pollination? Group of answer choicesIt occurs when pollen from the filament falls into the stigma of a plant.It is the transfer of pistil from the anther to the stigma of a flower.It is the transfer of pollen grains from the anther to the stigma of a flower.It is the transfer of pollen from the petals of a flower to the sepals of another. Flag question: Question 16Question 161 ptsChicks are hatched from eggs. A goat is born alive and looks like its parents. a frog undergoes many changes as it grows. What do these observations prove?Group of answer choicesDifferent animals reproduce in different ways.Different animals move in different ways.All animals are hatched from eggs.All animals are born alive. Flag question: Question 17Question 171 ptsWhich part of the flower are needed in reproduction?Group of answer choicespollen and antherpistil and stamenreceptacle and pollenpistil and sepals Flag question: Question 18Question 181 ptsIt is the stage which is characterized by rapid developmental changes. Group of answer choicespregnancymenstruationpubertyfertilization Flag question: Question 19Question 191 ptsIn which of the following stages of the menstrual cycle are the progesterone levels at their highest? Group of answer choicesmenstruation phaseovulation phaseluteal phasefollicular phase Flag question: Question 20Question 201 ptsIn the phases of the menstrual cycle, when does the uterine lining grow due to the estrogen hormone? Group of answer choicesovulation phaseluteal phasefollicular phasemenstruation phase Flag question: Question 21Question 211 ptsHow old is a boy when he experiences body changes? Group of answer choicesbetween 10 to 17 yrs. Oldbetween 9 to 10 yrs. Oldbetween 5 to 10 yrs. Oldbetween 7 to 17 yrs. Old Flag question: Question 22Question 221 ptsWhich of the following plants can cross-pollinate? Group of answer choicesPotatoesSquashRiceTomatoes Flag question: Question 23Question 231 ptsWhich is NOT TRUE about reproduction in animals? Group of answer choicesFertilization occurs inside the body for some female animals.All animals reproduce with the same mode of reproduction.Some animals reproduce sexually.Fertilization can happen outside female animal's body. Flag question: Question 24Question 241 ptsWhy do fishes/frogs produce thousands of offspring?Group of answer choicesTo produce food for predators.To maintain the population of each species.To make sure that there are lots of brothers and sistersTo increase the chance of some surviving. Flag question: Question 25Question 251 ptsWhy do frogs engage in a mating posture called amplexus?Group of answer choicesTo release more sperms for the male frogs.To release more eggs in water.To have a better hatching of eggs into tadpoles.To make sure that the sperms reach the eggs. Flag question: Question 26Question 261 ptsWhy are estuaries important to our environment?Group of answer choicesAll of the above.Estuaries provide nurseries for marine life.Estuaries act as home for many types of wildlife.Estuaries filter pollutants and prevent erosion. Flag question: Question 27Question 271 ptsWhich is NOT an example of abiotic factor in the environment?Group of answer choicestemperature of watersalinity of watertype of soilnumber of predators Flag question: Question 28Question 281 ptsAs a grade 5 pupil, in what way can you protect estuaries and intertidal zones?Group of answer choicesJoin organizations that promotes conversion of estuaries and intertidal zones to commercial areas.Dispose oil and other household waste on waterways.Practice actions that could put estuaries at risk.Take part in coastal clean-up drives and disseminate information on the proper care of estuaries. Flag question: Question 29Question 291 ptsWhat is the term used to describe when an organism's body part detaches and develops into a new organism?Group of answer choicesParthenogenesisFragmentationRegenerationBudding

An estuary is a partially enclosed, coastal body of water where salt water from the ocean mixes with freshwater from rivers and streams.The salt concentration varies in this area depending on how much freshwater is brought in by the river. If climate change results in rising sea levels and increased frequency of storms, more fresh water will be added to the estuaries. Which one of these will NOT result from this change in estuary communities? [B.3A]Select one:a.Stability of the species presentb.Communities moving away from the oceanc.Erosion of the land between the river and the oceand.Decreased salinity

Which accurately describes the relationship between nutrients and life-forms in an estuary?

Question 11 ptsFor animals or species to continue, connection is essential.Group of answer choicesTrueFalse Flag question: Question 2Question 21 ptsAnimals have two modes of reproduction: asexual and sexual.Group of answer choicesTrueFalse Flag question: Question 3Question 31 ptsThyroxine is another term for sex cells. Group of answer choicesTrueFalse Flag question: Question 4Question 41 ptsSexual reproduction begins with fertilization.Group of answer choicesTrueFalse Flag question: Question 5Question 51 ptsThere two types of sexual reproduction: internal and external fertilization.Group of answer choicesTrueFalse Flag question: Question 6Question 61 ptsExternal fertilization is always successful. Group of answer choicesTrueFalse Flag question: Question 7Question 71 ptsWhen the egg and sperm unite outside the female's body, it is called internal fertilization. Group of answer choicesTrueFalse Flag question: Question 8Question 81 ptsWhen the egg and sperm unite inside the female's body, it is called external fertilization.Group of answer choicesTrueFalse Flag question: Question 9Question 91 ptsAsexual reproduction is the production o new organisms from a single parent.Group of answer choicesTrueFalse Flag question: Question 10Question 101 ptsSexual reproduction is the production of new organisms from two parents.Group of answer choicesTrueFalse Flag question: Question 11Question 111 ptsIdentify the word/s being described in each item. Fertilized eggs are also referred to by this term. Flag question: Question 12Question 121 ptsIdentify the word/s being described in each item.  It occurs when the body of an animal breaks into distinct pieces, each of which can develop into an offspring. Flag question: Question 13Question 131 ptsIdentify the word/s being described in each item.  It occurs when a body part of an organism is detached and developed into a completely new organism. Flag question: Question 14Question 141 ptsIdentify the word/s being described in each item.  It involves  the development of an egg that has not been fertilized into an offspring. Flag question: Question 15Question 151 ptsIt is the union of the sperm cell and egg cell.