WAEC GCE 2017 Biology Obj And Theory/Essay Answer – Nov/Dec Expo

WAEC GCE Biology Questions and Answer – Nov/Dec 2017 Expo Runz

 Always subscribe to get your answer before exam start.

– white blood cells
– lipids
– responsible for the removal of interstitial fluid from tissues
– It transports white blood cells to and from the lymph nodes into the bones
– oxygen
– excretory products, such as carbon dioxide, urea, etc
– Hormones
Plants absorb water from the soil through their root hairs which are surrounded by soil water in the soil. The soil water is a more dilute solution than the soil sap inside the root hair hence water molecules move from soil water into the root hairs by the process of osmosis. Mineral salts are absorbed through the cell membrane often from a zone of their low concentration in the soil to a zone of their higher concentration in the cells of the roots through active absorption.
Placentation is the arrangement of ovules within an ovary. The part of the ovary where the ovules are attached is called a placenta.
– Marginal placentation
– Parietal placentation
– Axile placentation
– Free central placentation
Community : is any naturally Occurring group of different organisms living together and interacting in the same environment.
Population: is defined as the total number of organisms of the same species living together in a given area
Ecologicalnide: Refers to the specific portion of a habit which is occupied by a particular organism
Because all living organism need energy and nutrient in an environment in other to sustrundipe
– Lack of enough food
– out break of disease
– lack of money
– Exposed the soil into erosion
– Cause loss of nutrient into the plant
– Cause low yield
Irritability is the ability to be excited to a characteristic action or function by the application of some stimulus
Irritability is the Abnormal sensitivity or excessive responsiveness, as of an organ or body part, to a stimulus.
– Water
– Light
6ci) Tillage is the agricultural preparation of soil by mechanical agitation of various types, such as digging, stirring, and overturning. Examples of human-powered tilling methods using hand tools include shovelling, picking, mattock work, hoeing, and raking
– it Destroy soil living organism
– it reduces soil fertility
– it causes soil erosion
6ei) Oviparity is the expulsion of undeveloped eggs rather than live young. The eggs may have been fertilized before release, as in birds and some reptiles, or are to be fertilized externally, as in amphibians and many lower forms. In general, the number of eggs produced by oviparous species greatly exceeds the number of offspring from species that bear live young, but the chances of survival are diminished because of the lack of maternal protection.
Oviparity is the producing eggs that mature and hatch after being expelled from the body, as birds, most reptiles and fishes, and the monotremes.
6eii) Viviparity is the retention and growth of the fertilized egg within the maternal body until the young animal, as a larva or newborn, is capable of independent existence. The growing embryo derives continuous nourishment from the mother, usually through
a placenta or similar structure.
Rhizobium turns the free Nitrogen in air into
– Ammonia
– Nitrate
Sickle cell anaemia; this is a group of disorders that affects hemoglobin , the molecule in red blood cells that delivers oxygen to cells throughout the body.
i)The presence of fossils;
preserved impressions of organisms/ ancestors that lived in the past
ii)The vestigial structures;
an organ that serves no purpose anymore but did with a common ancestor
iii)The presence of homologous structures;how the bones or parts of an animal are the same but in different proportions
iv)The comparative embryology; in development, embryos look similar until they differentiate later on
V)The molecular evidence ;comparing DNA; to trace differences and similarities in DNA and other molecules, making the species more or less related.


Expospy.com posts all exam expo answer earlier than others


Verified WAEC GCE 2017 Biology question WAEC GCE Free 2017/2018 Biology & Practical Questions and answers have been posted FOR FREE OOOO 2017/2018 WAEC GCE Biology ANSWERS NOW AVAILABLE. ANSWERS NOW POSTED BY ADMIN. CLICK BELOW IMAGE FOR THE ANSWERS NOW. WAEC GCE 2017/2018 verified Biology Practical/ Questions and Answers Here (Biology ) WAEC GCE Biology expo,WAEC GCE 2017 Biology answers, FREE Biology ans for WAEC GCE, see WAEC GCE expo questions for free, correct Biology ans,Biology answers runz runs expo free real and correct WAEC GCE 2017 Biology free expo runz runs ans answers online for freee see free answers online. WAEC GCE 2017 Biology expo 2017/2018 WAEC GCE Free Biology Answers have been posted Biology 2017 WAEC GCE EXAMINATION EXPO/ANSWER RUNZ RUNS PracticalECTIVES . KINDLY COMMENT “ I NEED IT ” IN THE COMMENT BOX BELOW. REAL WAEC GCE Biology QUESTIONS & ANSWERS Direct To … RE: 2017/2018 WAEC GCE SSCE Biology (Expo) WAEC GCE 2017/2018 certified Biology questions and answers WAEC GCE MAY JUNE 2017 Biology / Practical QUESTION AND EXPO I need WAEC GCE Ssce free expo site, how can I get the answer for, Congratulation to Those who Sub For Previous Subjects and Received KINDLY COMMENT “ I NEED IT ” IN THE COMMENT BOX BELOW. Their Answers 6 Hours before Exam Biology. WAEC GCE Biology expo, 2017 WAEC GCE Biology, WAEC GCE Biology ans, answers/questions Biology WAEC GCE 2017 Biology Answers – June/July Expo Biology

Add a Comment

Your email address will not be published. Required fields are marked *