Laticifers are made of individual cells and can occur either as articulated systems (single cells connected by a small tube) or non-articulated systems (one large syncytial cell).

TLS Online TPP Program

#Id: 8419

#XL - T Zoology

The age structure of a population is the proportion of individuals that occurs in different age classes.

TLS Online TPP Program

#Id: 8420

#XL - T Zoology

Human population growth fits an exponential pattern

TLS Online TPP Program

#Id: 8421

#XL - T Zoology

Human populations can exist at equilibrium densities in one of two ways:

1. High birth and high death rates

2. Low birth and low death rate

TLS Online TPP Program

#Id: 8422

#XL - T Zoology

The difference between the birth rate and the death rate determines the rate of natural increase or decrease

TLS Online TPP Program

#Id: 8423

#XL - T Zoology

Parental investment - The amount of time and energy given to an offspring by its parents. 

Longevity - The life span of an organism. Also known as Life expectancy

TLS Online TPP Program

#Id: 8424

#XL - T Zoology